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Finding the Fourth Proportional to 657.74, 907.73 and 425.54

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Solution

The fourth proportional to 657.74, 907.73 and 425.54 is: 587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.74 : 907.73 = 425.54 : x
  2. Step 2: Convert to fraction form
    657.74/907.73 = 425.54/x
  3. Step 3: Cross multiply
    657.74x = 907.73 × 425.54
  4. Step 4: Simplify right side
    657.74x = 386,275.42
  5. Step 5: Solve for x
    x = 386,275.42/657.74
  6. Step 6: Final answer
    x = 587.28

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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.