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Finding the Fourth Proportional to 100.16, 149.25 and 97.22

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Solution

The fourth proportional to 100.16, 149.25 and 97.22 is: 144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.16 : 149.25 = 97.22 : x
  2. Step 2: Convert to fraction form
    100.16/149.25 = 97.22/x
  3. Step 3: Cross multiply
    100.16x = 149.25 × 97.22
  4. Step 4: Simplify right side
    100.16x = 14,510.46
  5. Step 5: Solve for x
    x = 14,510.46/100.16
  6. Step 6: Final answer
    x = 144.88

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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.