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Finding the Fourth Proportional to 227.76, 340.08 and 207.24

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Solution

The fourth proportional to 227.76, 340.08 and 207.24 is: 309.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.76 : 340.08 = 207.24 : x
  2. Step 2: Convert to fraction form
    227.76/340.08 = 207.24/x
  3. Step 3: Cross multiply
    227.76x = 340.08 × 207.24
  4. Step 4: Simplify right side
    227.76x = 70,478.18
  5. Step 5: Solve for x
    x = 70,478.18/227.76
  6. Step 6: Final answer
    x = 309.44

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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.