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Finding the Fourth Proportional to 215.92, 298.04 and 133.08

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Solution

The fourth proportional to 215.92, 298.04 and 133.08 is: 183.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.92 : 298.04 = 133.08 : x
  2. Step 2: Convert to fraction form
    215.92/298.04 = 133.08/x
  3. Step 3: Cross multiply
    215.92x = 298.04 × 133.08
  4. Step 4: Simplify right side
    215.92x = 39,663.16
  5. Step 5: Solve for x
    x = 39,663.16/215.92
  6. Step 6: Final answer
    x = 183.69

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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.