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Finding the Fourth Proportional to 637.62, 955.89 and 272.67

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Solution

The fourth proportional to 637.62, 955.89 and 272.67 is: 408.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.62 : 955.89 = 272.67 : x
  2. Step 2: Convert to fraction form
    637.62/955.89 = 272.67/x
  3. Step 3: Cross multiply
    637.62x = 955.89 × 272.67
  4. Step 4: Simplify right side
    637.62x = 260,642.53
  5. Step 5: Solve for x
    x = 260,642.53/637.62
  6. Step 6: Final answer
    x = 408.77

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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.