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Finding the Fourth Proportional to 223.52, 306.64 and 211.10

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Solution

The fourth proportional to 223.52, 306.64 and 211.10 is: 289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.52 : 306.64 = 211.10 : x
  2. Step 2: Convert to fraction form
    223.52/306.64 = 211.10/x
  3. Step 3: Cross multiply
    223.52x = 306.64 × 211.10
  4. Step 4: Simplify right side
    223.52x = 64,731.70
  5. Step 5: Solve for x
    x = 64,731.70/223.52
  6. Step 6: Final answer
    x = 289.60

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.