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Finding the Fourth Proportional to 657.27, 980.62 and 626.31

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Solution

The fourth proportional to 657.27, 980.62 and 626.31 is: 934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.27 : 980.62 = 626.31 : x
  2. Step 2: Convert to fraction form
    657.27/980.62 = 626.31/x
  3. Step 3: Cross multiply
    657.27x = 980.62 × 626.31
  4. Step 4: Simplify right side
    657.27x = 614,170.55
  5. Step 5: Solve for x
    x = 614,170.55/657.27
  6. Step 6: Final answer
    x = 934.43

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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.