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Finding the Fourth Proportional to 49.11, 74.10 and 47.24

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Solution

The fourth proportional to 49.11, 74.10 and 47.24 is: 71.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.11 : 74.10 = 47.24 : x
  2. Step 2: Convert to fraction form
    49.11/74.10 = 47.24/x
  3. Step 3: Cross multiply
    49.11x = 74.10 × 47.24
  4. Step 4: Simplify right side
    49.11x = 3,500.11
  5. Step 5: Solve for x
    x = 3,500.11/49.11
  6. Step 6: Final answer
    x = 71.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.