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Finding the Fourth Proportional to 98.92, 147.41 and 98.08

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Solution

The fourth proportional to 98.92, 147.41 and 98.08 is: 146.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.92 : 147.41 = 98.08 : x
  2. Step 2: Convert to fraction form
    98.92/147.41 = 98.08/x
  3. Step 3: Cross multiply
    98.92x = 147.41 × 98.08
  4. Step 4: Simplify right side
    98.92x = 14,457.97
  5. Step 5: Solve for x
    x = 14,457.97/98.92
  6. Step 6: Final answer
    x = 146.16

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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.