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Finding the Fourth Proportional to 243.12, 362.10 and 230.64

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Solution

The fourth proportional to 243.12, 362.10 and 230.64 is: 343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.12 : 362.10 = 230.64 : x
  2. Step 2: Convert to fraction form
    243.12/362.10 = 230.64/x
  3. Step 3: Cross multiply
    243.12x = 362.10 × 230.64
  4. Step 4: Simplify right side
    243.12x = 83,514.74
  5. Step 5: Solve for x
    x = 83,514.74/243.12
  6. Step 6: Final answer
    x = 343.51

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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.