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Finding the Fourth Proportional to 47.65, 66.07 and 46.15

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Solution

The fourth proportional to 47.65, 66.07 and 46.15 is: 63.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.65 : 66.07 = 46.15 : x
  2. Step 2: Convert to fraction form
    47.65/66.07 = 46.15/x
  3. Step 3: Cross multiply
    47.65x = 66.07 × 46.15
  4. Step 4: Simplify right side
    47.65x = 3,049.13
  5. Step 5: Solve for x
    x = 3,049.13/47.65
  6. Step 6: Final answer
    x = 63.99

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.