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Finding the Fourth Proportional to 637.95, 956.14 and 291.20

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Solution

The fourth proportional to 637.95, 956.14 and 291.20 is: 436.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.95 : 956.14 = 291.20 : x
  2. Step 2: Convert to fraction form
    637.95/956.14 = 291.20/x
  3. Step 3: Cross multiply
    637.95x = 956.14 × 291.20
  4. Step 4: Simplify right side
    637.95x = 278,422.46
  5. Step 5: Solve for x
    x = 278,422.46/637.95
  6. Step 6: Final answer
    x = 436.43

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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.