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Finding the Fourth Proportional to 724.88, 1,082.62 and 627.68

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Solution

The fourth proportional to 724.88, 1,082.62 and 627.68 is: 937.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.88 : 1,082.62 = 627.68 : x
  2. Step 2: Convert to fraction form
    724.88/1,082.62 = 627.68/x
  3. Step 3: Cross multiply
    724.88x = 1,082.62 × 627.68
  4. Step 4: Simplify right side
    724.88x = 679,538.92
  5. Step 5: Solve for x
    x = 679,538.92/724.88
  6. Step 6: Final answer
    x = 937.45

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.