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Finding the Fourth Proportional to 176.25, 243.23 and 98.65

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Solution

The fourth proportional to 176.25, 243.23 and 98.65 is: 136.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.25 : 243.23 = 98.65 : x
  2. Step 2: Convert to fraction form
    176.25/243.23 = 98.65/x
  3. Step 3: Cross multiply
    176.25x = 243.23 × 98.65
  4. Step 4: Simplify right side
    176.25x = 23,994.15
  5. Step 5: Solve for x
    x = 23,994.15/176.25
  6. Step 6: Final answer
    x = 136.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.