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Finding the Fourth Proportional to 98.59, 147.79 and 44.42

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Solution

The fourth proportional to 98.59, 147.79 and 44.42 is: 66.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.59 : 147.79 = 44.42 : x
  2. Step 2: Convert to fraction form
    98.59/147.79 = 44.42/x
  3. Step 3: Cross multiply
    98.59x = 147.79 × 44.42
  4. Step 4: Simplify right side
    98.59x = 6,564.83
  5. Step 5: Solve for x
    x = 6,564.83/98.59
  6. Step 6: Final answer
    x = 66.59

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.