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Finding the Fourth Proportional to 1,240.03, 1,860.04 and 966.32

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Solution

The fourth proportional to 1,240.03, 1,860.04 and 966.32 is: 1,449.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.03 : 1,860.04 = 966.32 : x
  2. Step 2: Convert to fraction form
    1,240.03/1,860.04 = 966.32/x
  3. Step 3: Cross multiply
    1,240.03x = 1,860.04 × 966.32
  4. Step 4: Simplify right side
    1,240.03x = 1,797,402.23
  5. Step 5: Solve for x
    x = 1,797,402.23/1,240.03
  6. Step 6: Final answer
    x = 1,449.49

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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.