Home / 1,165.38-1,747.53-515.22

Finding the Fourth Proportional to 1,165.38, 1,747.53 and 515.22

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Solution

The fourth proportional to 1,165.38, 1,747.53 and 515.22 is: 772.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.38 : 1,747.53 = 515.22 : x
  2. Step 2: Convert to fraction form
    1,165.38/1,747.53 = 515.22/x
  3. Step 3: Cross multiply
    1,165.38x = 1,747.53 × 515.22
  4. Step 4: Simplify right side
    1,165.38x = 900,362.41
  5. Step 5: Solve for x
    x = 900,362.41/1,165.38
  6. Step 6: Final answer
    x = 772.59

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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.