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Finding the Fourth Proportional to 101.92, 153.46 and 75.06

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Solution

The fourth proportional to 101.92, 153.46 and 75.06 is: 113.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.92 : 153.46 = 75.06 : x
  2. Step 2: Convert to fraction form
    101.92/153.46 = 75.06/x
  3. Step 3: Cross multiply
    101.92x = 153.46 × 75.06
  4. Step 4: Simplify right side
    101.92x = 11,518.71
  5. Step 5: Solve for x
    x = 11,518.71/101.92
  6. Step 6: Final answer
    x = 113.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.