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Finding the Fourth Proportional to 149.10, 207.18 and 147.36

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Solution

The fourth proportional to 149.10, 207.18 and 147.36 is: 204.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.10 : 207.18 = 147.36 : x
  2. Step 2: Convert to fraction form
    149.10/207.18 = 147.36/x
  3. Step 3: Cross multiply
    149.10x = 207.18 × 147.36
  4. Step 4: Simplify right side
    149.10x = 30,530.04
  5. Step 5: Solve for x
    x = 30,530.04/149.10
  6. Step 6: Final answer
    x = 204.76

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.