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Finding the Fourth Proportional to 722.43, 1,081.80 and 462.74

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Solution

The fourth proportional to 722.43, 1,081.80 and 462.74 is: 692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.43 : 1,081.80 = 462.74 : x
  2. Step 2: Convert to fraction form
    722.43/1,081.80 = 462.74/x
  3. Step 3: Cross multiply
    722.43x = 1,081.80 × 462.74
  4. Step 4: Simplify right side
    722.43x = 500,586.72
  5. Step 5: Solve for x
    x = 500,586.72/722.43
  6. Step 6: Final answer
    x = 692.92

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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.