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Finding the Fourth Proportional to 98.15, 147.27 and 44.15

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Solution

The fourth proportional to 98.15, 147.27 and 44.15 is: 66.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.15 : 147.27 = 44.15 : x
  2. Step 2: Convert to fraction form
    98.15/147.27 = 44.15/x
  3. Step 3: Cross multiply
    98.15x = 147.27 × 44.15
  4. Step 4: Simplify right side
    98.15x = 6,501.97
  5. Step 5: Solve for x
    x = 6,501.97/98.15
  6. Step 6: Final answer
    x = 66.25

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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.