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Finding the Fourth Proportional to 1,346.28, 2,019.42 and 615.66

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Solution

The fourth proportional to 1,346.28, 2,019.42 and 615.66 is: 923.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346.28 : 2,019.42 = 615.66 : x
  2. Step 2: Convert to fraction form
    1,346.28/2,019.42 = 615.66/x
  3. Step 3: Cross multiply
    1,346.28x = 2,019.42 × 615.66
  4. Step 4: Simplify right side
    1,346.28x = 1,243,276.12
  5. Step 5: Solve for x
    x = 1,243,276.12/1,346.28
  6. Step 6: Final answer
    x = 923.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.