Home / 1,215.25-1,823.18-349.56

Finding the Fourth Proportional to 1,215.25, 1,823.18 and 349.56

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Solution

The fourth proportional to 1,215.25, 1,823.18 and 349.56 is: 524.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.25 : 1,823.18 = 349.56 : x
  2. Step 2: Convert to fraction form
    1,215.25/1,823.18 = 349.56/x
  3. Step 3: Cross multiply
    1,215.25x = 1,823.18 × 349.56
  4. Step 4: Simplify right side
    1,215.25x = 637,310.80
  5. Step 5: Solve for x
    x = 637,310.80/1,215.25
  6. Step 6: Final answer
    x = 524.43

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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.