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Finding the Fourth Proportional to 149.85, 206.73 and 94.57

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Solution

The fourth proportional to 149.85, 206.73 and 94.57 is: 130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.85 : 206.73 = 94.57 : x
  2. Step 2: Convert to fraction form
    149.85/206.73 = 94.57/x
  3. Step 3: Cross multiply
    149.85x = 206.73 × 94.57
  4. Step 4: Simplify right side
    149.85x = 19,549.94
  5. Step 5: Solve for x
    x = 19,549.94/149.85
  6. Step 6: Final answer
    x = 130.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.