Home / 1,031.25-1,423.13-559.15

Finding the Fourth Proportional to 1,031.25, 1,423.13 and 559.15

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Solution

The fourth proportional to 1,031.25, 1,423.13 and 559.15 is: 771.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.25 : 1,423.13 = 559.15 : x
  2. Step 2: Convert to fraction form
    1,031.25/1,423.13 = 559.15/x
  3. Step 3: Cross multiply
    1,031.25x = 1,423.13 × 559.15
  4. Step 4: Simplify right side
    1,031.25x = 795,735.71
  5. Step 5: Solve for x
    x = 795,735.71/1,031.25
  6. Step 6: Final answer
    x = 771.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.