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Finding the Fourth Proportional to 1,565.41, 2,346.42 and 783.53

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Solution

The fourth proportional to 1,565.41, 2,346.42 and 783.53 is: 1,174.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.41 : 2,346.42 = 783.53 : x
  2. Step 2: Convert to fraction form
    1,565.41/2,346.42 = 783.53/x
  3. Step 3: Cross multiply
    1,565.41x = 2,346.42 × 783.53
  4. Step 4: Simplify right side
    1,565.41x = 1,838,490.19
  5. Step 5: Solve for x
    x = 1,838,490.19/1,565.41
  6. Step 6: Final answer
    x = 1,174.44

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Double scale
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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.