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Finding the Fourth Proportional to 132.64, 199.01 and 74.93

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Solution

The fourth proportional to 132.64, 199.01 and 74.93 is: 112.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.64 : 199.01 = 74.93 : x
  2. Step 2: Convert to fraction form
    132.64/199.01 = 74.93/x
  3. Step 3: Cross multiply
    132.64x = 199.01 × 74.93
  4. Step 4: Simplify right side
    132.64x = 14,912.10
  5. Step 5: Solve for x
    x = 14,912.10/132.64
  6. Step 6: Final answer
    x = 112.42

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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.