Home / 1,218.23-1,827.20-352.55

Finding the Fourth Proportional to 1,218.23, 1,827.20 and 352.55

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Solution

The fourth proportional to 1,218.23, 1,827.20 and 352.55 is: 528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.23 : 1,827.20 = 352.55 : x
  2. Step 2: Convert to fraction form
    1,218.23/1,827.20 = 352.55/x
  3. Step 3: Cross multiply
    1,218.23x = 1,827.20 × 352.55
  4. Step 4: Simplify right side
    1,218.23x = 644,168.46
  5. Step 5: Solve for x
    x = 644,168.46/1,218.23
  6. Step 6: Final answer
    x = 528.78

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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.