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Finding the Fourth Proportional to 46.13, 68.66 and 42.71

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Solution

The fourth proportional to 46.13, 68.66 and 42.71 is: 63.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.13 : 68.66 = 42.71 : x
  2. Step 2: Convert to fraction form
    46.13/68.66 = 42.71/x
  3. Step 3: Cross multiply
    46.13x = 68.66 × 42.71
  4. Step 4: Simplify right side
    46.13x = 2,931.91
  5. Step 5: Solve for x
    x = 2,931.91/46.13
  6. Step 6: Final answer
    x = 63.56

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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.