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Finding the Fourth Proportional to 46.46, 63.72 and 45.15

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Solution

The fourth proportional to 46.46, 63.72 and 45.15 is: 61.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.46 : 63.72 = 45.15 : x
  2. Step 2: Convert to fraction form
    46.46/63.72 = 45.15/x
  3. Step 3: Cross multiply
    46.46x = 63.72 × 45.15
  4. Step 4: Simplify right side
    46.46x = 2,876.96
  5. Step 5: Solve for x
    x = 2,876.96/46.46
  6. Step 6: Final answer
    x = 61.93

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.