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Finding the Fourth Proportional to 1,531.57, 2,295.69 and 752.11

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Solution

The fourth proportional to 1,531.57, 2,295.69 and 752.11 is: 1,127.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.57 : 2,295.69 = 752.11 : x
  2. Step 2: Convert to fraction form
    1,531.57/2,295.69 = 752.11/x
  3. Step 3: Cross multiply
    1,531.57x = 2,295.69 × 752.11
  4. Step 4: Simplify right side
    1,531.57x = 1,726,611.41
  5. Step 5: Solve for x
    x = 1,726,611.41/1,531.57
  6. Step 6: Final answer
    x = 1,127.35

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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.