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Finding the Fourth Proportional to 88.55, 132.58 and 77.51

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Solution

The fourth proportional to 88.55, 132.58 and 77.51 is: 116.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.55 : 132.58 = 77.51 : x
  2. Step 2: Convert to fraction form
    88.55/132.58 = 77.51/x
  3. Step 3: Cross multiply
    88.55x = 132.58 × 77.51
  4. Step 4: Simplify right side
    88.55x = 10,276.28
  5. Step 5: Solve for x
    x = 10,276.28/88.55
  6. Step 6: Final answer
    x = 116.05

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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.