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Finding the Fourth Proportional to 1,082.91, 1,624.65 and 433.83

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Solution

The fourth proportional to 1,082.91, 1,624.65 and 433.83 is: 650.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.91 : 1,624.65 = 433.83 : x
  2. Step 2: Convert to fraction form
    1,082.91/1,624.65 = 433.83/x
  3. Step 3: Cross multiply
    1,082.91x = 1,624.65 × 433.83
  4. Step 4: Simplify right side
    1,082.91x = 704,821.91
  5. Step 5: Solve for x
    x = 704,821.91/1,082.91
  6. Step 6: Final answer
    x = 650.86

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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.