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Finding the Fourth Proportional to 48.13, 66.42 and 29.71

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Solution

The fourth proportional to 48.13, 66.42 and 29.71 is: 41.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.13 : 66.42 = 29.71 : x
  2. Step 2: Convert to fraction form
    48.13/66.42 = 29.71/x
  3. Step 3: Cross multiply
    48.13x = 66.42 × 29.71
  4. Step 4: Simplify right side
    48.13x = 1,973.49
  5. Step 5: Solve for x
    x = 1,973.49/48.13
  6. Step 6: Final answer
    x = 41.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.