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Finding the Fourth Proportional to 637.88, 956.81 and 253.13

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Solution

The fourth proportional to 637.88, 956.81 and 253.13 is: 379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.88 : 956.81 = 253.13 : x
  2. Step 2: Convert to fraction form
    637.88/956.81 = 253.13/x
  3. Step 3: Cross multiply
    637.88x = 956.81 × 253.13
  4. Step 4: Simplify right side
    637.88x = 242,193.16
  5. Step 5: Solve for x
    x = 242,193.16/637.88
  6. Step 6: Final answer
    x = 379.69

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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.