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Finding the Fourth Proportional to 663.59, 995.43 and 230.78

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Solution

The fourth proportional to 663.59, 995.43 and 230.78 is: 346.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.59 : 995.43 = 230.78 : x
  2. Step 2: Convert to fraction form
    663.59/995.43 = 230.78/x
  3. Step 3: Cross multiply
    663.59x = 995.43 × 230.78
  4. Step 4: Simplify right side
    663.59x = 229,725.34
  5. Step 5: Solve for x
    x = 229,725.34/663.59
  6. Step 6: Final answer
    x = 346.19

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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.