Home / 1,245.53-1,868.25-514.56

Finding the Fourth Proportional to 1,245.53, 1,868.25 and 514.56

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Solution

The fourth proportional to 1,245.53, 1,868.25 and 514.56 is: 771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.53 : 1,868.25 = 514.56 : x
  2. Step 2: Convert to fraction form
    1,245.53/1,868.25 = 514.56/x
  3. Step 3: Cross multiply
    1,245.53x = 1,868.25 × 514.56
  4. Step 4: Simplify right side
    1,245.53x = 961,326.72
  5. Step 5: Solve for x
    x = 961,326.72/1,245.53
  6. Step 6: Final answer
    x = 771.82

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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.