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Finding the Fourth Proportional to 657.89, 907.05 and 539.43

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Solution

The fourth proportional to 657.89, 907.05 and 539.43 is: 743.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.89 : 907.05 = 539.43 : x
  2. Step 2: Convert to fraction form
    657.89/907.05 = 539.43/x
  3. Step 3: Cross multiply
    657.89x = 907.05 × 539.43
  4. Step 4: Simplify right side
    657.89x = 489,289.98
  5. Step 5: Solve for x
    x = 489,289.98/657.89
  6. Step 6: Final answer
    x = 743.73

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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.