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Finding the Fourth Proportional to 98.04, 147.81 and 89.04

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Solution

The fourth proportional to 98.04, 147.81 and 89.04 is: 134.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.04 : 147.81 = 89.04 : x
  2. Step 2: Convert to fraction form
    98.04/147.81 = 89.04/x
  3. Step 3: Cross multiply
    98.04x = 147.81 × 89.04
  4. Step 4: Simplify right side
    98.04x = 13,161.00
  5. Step 5: Solve for x
    x = 13,161.00/98.04
  6. Step 6: Final answer
    x = 134.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.