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Finding the Fourth Proportional to 97.22, 145.50 and 83.46

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Solution

The fourth proportional to 97.22, 145.50 and 83.46 is: 124.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.22 : 145.50 = 83.46 : x
  2. Step 2: Convert to fraction form
    97.22/145.50 = 83.46/x
  3. Step 3: Cross multiply
    97.22x = 145.50 × 83.46
  4. Step 4: Simplify right side
    97.22x = 12,143.43
  5. Step 5: Solve for x
    x = 12,143.43/97.22
  6. Step 6: Final answer
    x = 124.91

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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.