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Finding the Fourth Proportional to 223.59, 335.52 and 215.16

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Solution

The fourth proportional to 223.59, 335.52 and 215.16 is: 322.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.59 : 335.52 = 215.16 : x
  2. Step 2: Convert to fraction form
    223.59/335.52 = 215.16/x
  3. Step 3: Cross multiply
    223.59x = 335.52 × 215.16
  4. Step 4: Simplify right side
    223.59x = 72,190.48
  5. Step 5: Solve for x
    x = 72,190.48/223.59
  6. Step 6: Final answer
    x = 322.87

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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.