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Finding the Fourth Proportional to 88.51, 132.74 and 61.02

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Solution

The fourth proportional to 88.51, 132.74 and 61.02 is: 91.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.51 : 132.74 = 61.02 : x
  2. Step 2: Convert to fraction form
    88.51/132.74 = 61.02/x
  3. Step 3: Cross multiply
    88.51x = 132.74 × 61.02
  4. Step 4: Simplify right side
    88.51x = 8,099.16
  5. Step 5: Solve for x
    x = 8,099.16/88.51
  6. Step 6: Final answer
    x = 91.51

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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.