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Finding the Fourth Proportional to 100.17, 149.27 and 98.33

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Solution

The fourth proportional to 100.17, 149.27 and 98.33 is: 146.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.17 : 149.27 = 98.33 : x
  2. Step 2: Convert to fraction form
    100.17/149.27 = 98.33/x
  3. Step 3: Cross multiply
    100.17x = 149.27 × 98.33
  4. Step 4: Simplify right side
    100.17x = 14,676.48
  5. Step 5: Solve for x
    x = 14,676.48/100.17
  6. Step 6: Final answer
    x = 146.52

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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.