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Finding the Fourth Proportional to 1,180.98, 1,772.42 and 531.77

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Solution

The fourth proportional to 1,180.98, 1,772.42 and 531.77 is: 798.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.98 : 1,772.42 = 531.77 : x
  2. Step 2: Convert to fraction form
    1,180.98/1,772.42 = 531.77/x
  3. Step 3: Cross multiply
    1,180.98x = 1,772.42 × 531.77
  4. Step 4: Simplify right side
    1,180.98x = 942,508.26
  5. Step 5: Solve for x
    x = 942,508.26/1,180.98
  6. Step 6: Final answer
    x = 798.07

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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.