Home / 1,217.17-1,825.80-351.55

Finding the Fourth Proportional to 1,217.17, 1,825.80 and 351.55

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Solution

The fourth proportional to 1,217.17, 1,825.80 and 351.55 is: 527.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.17 : 1,825.80 = 351.55 : x
  2. Step 2: Convert to fraction form
    1,217.17/1,825.80 = 351.55/x
  3. Step 3: Cross multiply
    1,217.17x = 1,825.80 × 351.55
  4. Step 4: Simplify right side
    1,217.17x = 641,859.99
  5. Step 5: Solve for x
    x = 641,859.99/1,217.17
  6. Step 6: Final answer
    x = 527.34

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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.