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Finding the Fourth Proportional to 49.03, 73.53 and 31.91

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Solution

The fourth proportional to 49.03, 73.53 and 31.91 is: 47.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.03 : 73.53 = 31.91 : x
  2. Step 2: Convert to fraction form
    49.03/73.53 = 31.91/x
  3. Step 3: Cross multiply
    49.03x = 73.53 × 31.91
  4. Step 4: Simplify right side
    49.03x = 2,346.34
  5. Step 5: Solve for x
    x = 2,346.34/49.03
  6. Step 6: Final answer
    x = 47.86

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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.