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Finding the Fourth Proportional to 772.46, 1,159.89 and 590.54

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Solution

The fourth proportional to 772.46, 1,159.89 and 590.54 is: 886.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.46 : 1,159.89 = 590.54 : x
  2. Step 2: Convert to fraction form
    772.46/1,159.89 = 590.54/x
  3. Step 3: Cross multiply
    772.46x = 1,159.89 × 590.54
  4. Step 4: Simplify right side
    772.46x = 684,961.44
  5. Step 5: Solve for x
    x = 684,961.44/772.46
  6. Step 6: Final answer
    x = 886.73

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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.