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Finding the Fourth Proportional to 112.66, 168.01 and 102.33

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Solution

The fourth proportional to 112.66, 168.01 and 102.33 is: 152.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.66 : 168.01 = 102.33 : x
  2. Step 2: Convert to fraction form
    112.66/168.01 = 102.33/x
  3. Step 3: Cross multiply
    112.66x = 168.01 × 102.33
  4. Step 4: Simplify right side
    112.66x = 17,192.21
  5. Step 5: Solve for x
    x = 17,192.21/112.66
  6. Step 6: Final answer
    x = 152.61

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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.