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Finding the Fourth Proportional to 206.54, 309.20 and 152.06

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Solution

The fourth proportional to 206.54, 309.20 and 152.06 is: 227.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.54 : 309.20 = 152.06 : x
  2. Step 2: Convert to fraction form
    206.54/309.20 = 152.06/x
  3. Step 3: Cross multiply
    206.54x = 309.20 × 152.06
  4. Step 4: Simplify right side
    206.54x = 47,016.96
  5. Step 5: Solve for x
    x = 47,016.96/206.54
  6. Step 6: Final answer
    x = 227.65

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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.