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Finding the Fourth Proportional to 206.16, 308.44 and 148.52

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Solution

The fourth proportional to 206.16, 308.44 and 148.52 is: 222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.16 : 308.44 = 148.52 : x
  2. Step 2: Convert to fraction form
    206.16/308.44 = 148.52/x
  3. Step 3: Cross multiply
    206.16x = 308.44 × 148.52
  4. Step 4: Simplify right side
    206.16x = 45,808.15
  5. Step 5: Solve for x
    x = 45,808.15/206.16
  6. Step 6: Final answer
    x = 222.20

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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.