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Finding the Fourth Proportional to 558.24, 836.88 and 216.48

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Solution

The fourth proportional to 558.24, 836.88 and 216.48 is: 324.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.24 : 836.88 = 216.48 : x
  2. Step 2: Convert to fraction form
    558.24/836.88 = 216.48/x
  3. Step 3: Cross multiply
    558.24x = 836.88 × 216.48
  4. Step 4: Simplify right side
    558.24x = 181,167.78
  5. Step 5: Solve for x
    x = 181,167.78/558.24
  6. Step 6: Final answer
    x = 324.53

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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.