Home / 1,245.49-1,868.45-514.66

Finding the Fourth Proportional to 1,245.49, 1,868.45 and 514.66

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Solution

The fourth proportional to 1,245.49, 1,868.45 and 514.66 is: 772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.49 : 1,868.45 = 514.66 : x
  2. Step 2: Convert to fraction form
    1,245.49/1,868.45 = 514.66/x
  3. Step 3: Cross multiply
    1,245.49x = 1,868.45 × 514.66
  4. Step 4: Simplify right side
    1,245.49x = 961,616.48
  5. Step 5: Solve for x
    x = 961,616.48/1,245.49
  6. Step 6: Final answer
    x = 772.08

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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.