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Finding the Fourth Proportional to 1,062.46, 1,594.50 and 515.31

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Solution

The fourth proportional to 1,062.46, 1,594.50 and 515.31 is: 773.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.46 : 1,594.50 = 515.31 : x
  2. Step 2: Convert to fraction form
    1,062.46/1,594.50 = 515.31/x
  3. Step 3: Cross multiply
    1,062.46x = 1,594.50 × 515.31
  4. Step 4: Simplify right side
    1,062.46x = 821,661.80
  5. Step 5: Solve for x
    x = 821,661.80/1,062.46
  6. Step 6: Final answer
    x = 773.36

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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.