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Finding the Fourth Proportional to 637.42, 956.25 and 272.20

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Solution

The fourth proportional to 637.42, 956.25 and 272.20 is: 408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.42 : 956.25 = 272.20 : x
  2. Step 2: Convert to fraction form
    637.42/956.25 = 272.20/x
  3. Step 3: Cross multiply
    637.42x = 956.25 × 272.20
  4. Step 4: Simplify right side
    637.42x = 260,291.25
  5. Step 5: Solve for x
    x = 260,291.25/637.42
  6. Step 6: Final answer
    x = 408.35

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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.