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Finding the Fourth Proportional to 63.56, 87.60 and 46.28

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Solution

The fourth proportional to 63.56, 87.60 and 46.28 is: 63.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.56 : 87.60 = 46.28 : x
  2. Step 2: Convert to fraction form
    63.56/87.60 = 46.28/x
  3. Step 3: Cross multiply
    63.56x = 87.60 × 46.28
  4. Step 4: Simplify right side
    63.56x = 4,054.13
  5. Step 5: Solve for x
    x = 4,054.13/63.56
  6. Step 6: Final answer
    x = 63.78

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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.