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Finding the Fourth Proportional to 229.04, 343.20 and 188

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Solution

The fourth proportional to 229.04, 343.20 and 188 is: 281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.04 : 343.20 = 188 : x
  2. Step 2: Convert to fraction form
    229.04/343.20 = 188/x
  3. Step 3: Cross multiply
    229.04x = 343.20 × 188
  4. Step 4: Simplify right side
    229.04x = 64,521.60
  5. Step 5: Solve for x
    x = 64,521.60/229.04
  6. Step 6: Final answer
    x = 281.70

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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.