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Finding the Fourth Proportional to 88.90, 132.60 and 87.52

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Solution

The fourth proportional to 88.90, 132.60 and 87.52 is: 130.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.90 : 132.60 = 87.52 : x
  2. Step 2: Convert to fraction form
    88.90/132.60 = 87.52/x
  3. Step 3: Cross multiply
    88.90x = 132.60 × 87.52
  4. Step 4: Simplify right side
    88.90x = 11,605.15
  5. Step 5: Solve for x
    x = 11,605.15/88.90
  6. Step 6: Final answer
    x = 130.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.