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Finding the Fourth Proportional to 723.98, 1,086.16 and 333.66

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Solution

The fourth proportional to 723.98, 1,086.16 and 333.66 is: 500.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.98 : 1,086.16 = 333.66 : x
  2. Step 2: Convert to fraction form
    723.98/1,086.16 = 333.66/x
  3. Step 3: Cross multiply
    723.98x = 1,086.16 × 333.66
  4. Step 4: Simplify right side
    723.98x = 362,407.31
  5. Step 5: Solve for x
    x = 362,407.31/723.98
  6. Step 6: Final answer
    x = 500.57

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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.