Home / 1,131.08-1,695.30-514.20

Finding the Fourth Proportional to 1,131.08, 1,695.30 and 514.20

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Solution

The fourth proportional to 1,131.08, 1,695.30 and 514.20 is: 770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.08 : 1,695.30 = 514.20 : x
  2. Step 2: Convert to fraction form
    1,131.08/1,695.30 = 514.20/x
  3. Step 3: Cross multiply
    1,131.08x = 1,695.30 × 514.20
  4. Step 4: Simplify right side
    1,131.08x = 871,723.26
  5. Step 5: Solve for x
    x = 871,723.26/1,131.08
  6. Step 6: Final answer
    x = 770.70

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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.