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Finding the Fourth Proportional to 753.15, 1,129.82 and 233.19

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Solution

The fourth proportional to 753.15, 1,129.82 and 233.19 is: 349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.15 : 1,129.82 = 233.19 : x
  2. Step 2: Convert to fraction form
    753.15/1,129.82 = 233.19/x
  3. Step 3: Cross multiply
    753.15x = 1,129.82 × 233.19
  4. Step 4: Simplify right side
    753.15x = 263,463.31
  5. Step 5: Solve for x
    x = 263,463.31/753.15
  6. Step 6: Final answer
    x = 349.82

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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.