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Finding the Fourth Proportional to 637.33, 956.10 and 312.72

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Solution

The fourth proportional to 637.33, 956.10 and 312.72 is: 469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.33 : 956.10 = 312.72 : x
  2. Step 2: Convert to fraction form
    637.33/956.10 = 312.72/x
  3. Step 3: Cross multiply
    637.33x = 956.10 × 312.72
  4. Step 4: Simplify right side
    637.33x = 298,991.59
  5. Step 5: Solve for x
    x = 298,991.59/637.33
  6. Step 6: Final answer
    x = 469.13

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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.