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Finding the Fourth Proportional to 101.22, 152.52 and 97.98

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Solution

The fourth proportional to 101.22, 152.52 and 97.98 is: 147.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.22 : 152.52 = 97.98 : x
  2. Step 2: Convert to fraction form
    101.22/152.52 = 97.98/x
  3. Step 3: Cross multiply
    101.22x = 152.52 × 97.98
  4. Step 4: Simplify right side
    101.22x = 14,943.91
  5. Step 5: Solve for x
    x = 14,943.91/101.22
  6. Step 6: Final answer
    x = 147.64

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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.