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Finding the Fourth Proportional to 71.33, 106.93 and 32.79

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Solution

The fourth proportional to 71.33, 106.93 and 32.79 is: 49.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.33 : 106.93 = 32.79 : x
  2. Step 2: Convert to fraction form
    71.33/106.93 = 32.79/x
  3. Step 3: Cross multiply
    71.33x = 106.93 × 32.79
  4. Step 4: Simplify right side
    71.33x = 3,506.57
  5. Step 5: Solve for x
    x = 3,506.57/71.33
  6. Step 6: Final answer
    x = 49.16

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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.