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Finding the Fourth Proportional to 1,072.29, 1,479.67 and 593.65

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Solution

The fourth proportional to 1,072.29, 1,479.67 and 593.65 is: 819.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072.29 : 1,479.67 = 593.65 : x
  2. Step 2: Convert to fraction form
    1,072.29/1,479.67 = 593.65/x
  3. Step 3: Cross multiply
    1,072.29x = 1,479.67 × 593.65
  4. Step 4: Simplify right side
    1,072.29x = 878,406.10
  5. Step 5: Solve for x
    x = 878,406.10/1,072.29
  6. Step 6: Final answer
    x = 819.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.