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Finding the Fourth Proportional to 46.13, 69.08 and 38.90

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Solution

The fourth proportional to 46.13, 69.08 and 38.90 is: 58.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.13 : 69.08 = 38.90 : x
  2. Step 2: Convert to fraction form
    46.13/69.08 = 38.90/x
  3. Step 3: Cross multiply
    46.13x = 69.08 × 38.90
  4. Step 4: Simplify right side
    46.13x = 2,687.21
  5. Step 5: Solve for x
    x = 2,687.21/46.13
  6. Step 6: Final answer
    x = 58.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.