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Finding the Fourth Proportional to 373.28, 558.48 and 219.36

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Solution

The fourth proportional to 373.28, 558.48 and 219.36 is: 328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.28 : 558.48 = 219.36 : x
  2. Step 2: Convert to fraction form
    373.28/558.48 = 219.36/x
  3. Step 3: Cross multiply
    373.28x = 558.48 × 219.36
  4. Step 4: Simplify right side
    373.28x = 122,508.17
  5. Step 5: Solve for x
    x = 122,508.17/373.28
  6. Step 6: Final answer
    x = 328.19

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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.