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Finding the Fourth Proportional to 1,079.61, 1,620.13 and 593

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Solution

The fourth proportional to 1,079.61, 1,620.13 and 593 is: 889.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.61 : 1,620.13 = 593 : x
  2. Step 2: Convert to fraction form
    1,079.61/1,620.13 = 593/x
  3. Step 3: Cross multiply
    1,079.61x = 1,620.13 × 593
  4. Step 4: Simplify right side
    1,079.61x = 960,737.09
  5. Step 5: Solve for x
    x = 960,737.09/1,079.61
  6. Step 6: Final answer
    x = 889.89

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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.