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Finding the Fourth Proportional to 657.99, 908.42 and 437.40

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Solution

The fourth proportional to 657.99, 908.42 and 437.40 is: 603.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.99 : 908.42 = 437.40 : x
  2. Step 2: Convert to fraction form
    657.99/908.42 = 437.40/x
  3. Step 3: Cross multiply
    657.99x = 908.42 × 437.40
  4. Step 4: Simplify right side
    657.99x = 397,340.72
  5. Step 5: Solve for x
    x = 397,340.72/657.99
  6. Step 6: Final answer
    x = 603.87

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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.