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Finding the Fourth Proportional to 637.86, 956.90 and 291.32

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Solution

The fourth proportional to 637.86, 956.90 and 291.32 is: 437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.86 : 956.90 = 291.32 : x
  2. Step 2: Convert to fraction form
    637.86/956.90 = 291.32/x
  3. Step 3: Cross multiply
    637.86x = 956.90 × 291.32
  4. Step 4: Simplify right side
    637.86x = 278,764.11
  5. Step 5: Solve for x
    x = 278,764.11/637.86
  6. Step 6: Final answer
    x = 437.03

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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.