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Finding the Fourth Proportional to 215.44, 296.76 and 149.83

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Solution

The fourth proportional to 215.44, 296.76 and 149.83 is: 206.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.44 : 296.76 = 149.83 : x
  2. Step 2: Convert to fraction form
    215.44/296.76 = 149.83/x
  3. Step 3: Cross multiply
    215.44x = 296.76 × 149.83
  4. Step 4: Simplify right side
    215.44x = 44,463.55
  5. Step 5: Solve for x
    x = 44,463.55/215.44
  6. Step 6: Final answer
    x = 206.38

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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.