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Finding the Fourth Proportional to 49.64, 74.17 and 43.48

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Solution

The fourth proportional to 49.64, 74.17 and 43.48 is: 64.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.64 : 74.17 = 43.48 : x
  2. Step 2: Convert to fraction form
    49.64/74.17 = 43.48/x
  3. Step 3: Cross multiply
    49.64x = 74.17 × 43.48
  4. Step 4: Simplify right side
    49.64x = 3,224.91
  5. Step 5: Solve for x
    x = 3,224.91/49.64
  6. Step 6: Final answer
    x = 64.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.