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Finding the Fourth Proportional to 230.96, 347.75 and 203.72

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Solution

The fourth proportional to 230.96, 347.75 and 203.72 is: 306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.96 : 347.75 = 203.72 : x
  2. Step 2: Convert to fraction form
    230.96/347.75 = 203.72/x
  3. Step 3: Cross multiply
    230.96x = 347.75 × 203.72
  4. Step 4: Simplify right side
    230.96x = 70,841.38
  5. Step 5: Solve for x
    x = 70,841.38/230.96
  6. Step 6: Final answer
    x = 306.72

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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.