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Finding the Fourth Proportional to 637.80, 956.04 and 272.28

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Solution

The fourth proportional to 637.80, 956.04 and 272.28 is: 408.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.80 : 956.04 = 272.28 : x
  2. Step 2: Convert to fraction form
    637.80/956.04 = 272.28/x
  3. Step 3: Cross multiply
    637.80x = 956.04 × 272.28
  4. Step 4: Simplify right side
    637.80x = 260,310.57
  5. Step 5: Solve for x
    x = 260,310.57/637.80
  6. Step 6: Final answer
    x = 408.14

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1.5x scale

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.