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Finding the Fourth Proportional to 63.52, 87.56 and 51.20

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Solution

The fourth proportional to 63.52, 87.56 and 51.20 is: 70.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.52 : 87.56 = 51.20 : x
  2. Step 2: Convert to fraction form
    63.52/87.56 = 51.20/x
  3. Step 3: Cross multiply
    63.52x = 87.56 × 51.20
  4. Step 4: Simplify right side
    63.52x = 4,483.07
  5. Step 5: Solve for x
    x = 4,483.07/63.52
  6. Step 6: Final answer
    x = 70.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.