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Finding the Fourth Proportional to 722.16, 1,082.31 and 462.06

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Solution

The fourth proportional to 722.16, 1,082.31 and 462.06 is: 692.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.16 : 1,082.31 = 462.06 : x
  2. Step 2: Convert to fraction form
    722.16/1,082.31 = 462.06/x
  3. Step 3: Cross multiply
    722.16x = 1,082.31 × 462.06
  4. Step 4: Simplify right side
    722.16x = 500,092.16
  5. Step 5: Solve for x
    x = 500,092.16/722.16
  6. Step 6: Final answer
    x = 692.49

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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.