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Finding the Fourth Proportional to 98.95, 148.43 and 44.89

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Solution

The fourth proportional to 98.95, 148.43 and 44.89 is: 67.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.95 : 148.43 = 44.89 : x
  2. Step 2: Convert to fraction form
    98.95/148.43 = 44.89/x
  3. Step 3: Cross multiply
    98.95x = 148.43 × 44.89
  4. Step 4: Simplify right side
    98.95x = 6,663.02
  5. Step 5: Solve for x
    x = 6,663.02/98.95
  6. Step 6: Final answer
    x = 67.34

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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.