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Finding the Fourth Proportional to 681.01, 938.69 and 627.35

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Solution

The fourth proportional to 681.01, 938.69 and 627.35 is: 864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.01 : 938.69 = 627.35 : x
  2. Step 2: Convert to fraction form
    681.01/938.69 = 627.35/x
  3. Step 3: Cross multiply
    681.01x = 938.69 × 627.35
  4. Step 4: Simplify right side
    681.01x = 588,881.69
  5. Step 5: Solve for x
    x = 588,881.69/681.01
  6. Step 6: Final answer
    x = 864.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.