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Finding the Fourth Proportional to 762.01, 1,142.20 and 323.17

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Solution

The fourth proportional to 762.01, 1,142.20 and 323.17 is: 484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.01 : 1,142.20 = 323.17 : x
  2. Step 2: Convert to fraction form
    762.01/1,142.20 = 323.17/x
  3. Step 3: Cross multiply
    762.01x = 1,142.20 × 323.17
  4. Step 4: Simplify right side
    762.01x = 369,124.77
  5. Step 5: Solve for x
    x = 369,124.77/762.01
  6. Step 6: Final answer
    x = 484.41

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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.