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Finding the Fourth Proportional to 228.88, 340.88 and 223.20

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Solution

The fourth proportional to 228.88, 340.88 and 223.20 is: 332.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.88 : 340.88 = 223.20 : x
  2. Step 2: Convert to fraction form
    228.88/340.88 = 223.20/x
  3. Step 3: Cross multiply
    228.88x = 340.88 × 223.20
  4. Step 4: Simplify right side
    228.88x = 76,084.42
  5. Step 5: Solve for x
    x = 76,084.42/228.88
  6. Step 6: Final answer
    x = 332.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.