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Finding the Fourth Proportional to 98.20, 147.33 and 43.37

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Solution

The fourth proportional to 98.20, 147.33 and 43.37 is: 65.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.20 : 147.33 = 43.37 : x
  2. Step 2: Convert to fraction form
    98.20/147.33 = 43.37/x
  3. Step 3: Cross multiply
    98.20x = 147.33 × 43.37
  4. Step 4: Simplify right side
    98.20x = 6,388.97
  5. Step 5: Solve for x
    x = 6,388.97/98.20
  6. Step 6: Final answer
    x = 65.06

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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.