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Finding the Fourth Proportional to 657.95, 908.02 and 378.27

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Solution

The fourth proportional to 657.95, 908.02 and 378.27 is: 522.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.95 : 908.02 = 378.27 : x
  2. Step 2: Convert to fraction form
    657.95/908.02 = 378.27/x
  3. Step 3: Cross multiply
    657.95x = 908.02 × 378.27
  4. Step 4: Simplify right side
    657.95x = 343,476.73
  5. Step 5: Solve for x
    x = 343,476.73/657.95
  6. Step 6: Final answer
    x = 522.04

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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.