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Finding the Fourth Proportional to 657.42, 984.97 and 437.93

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Solution

The fourth proportional to 657.42, 984.97 and 437.93 is: 656.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.42 : 984.97 = 437.93 : x
  2. Step 2: Convert to fraction form
    657.42/984.97 = 437.93/x
  3. Step 3: Cross multiply
    657.42x = 984.97 × 437.93
  4. Step 4: Simplify right side
    657.42x = 431,347.91
  5. Step 5: Solve for x
    x = 431,347.91/657.42
  6. Step 6: Final answer
    x = 656.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.