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Finding the Fourth Proportional to 288.38, 398.06 and 184.88

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Solution

The fourth proportional to 288.38, 398.06 and 184.88 is: 255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.38 : 398.06 = 184.88 : x
  2. Step 2: Convert to fraction form
    288.38/398.06 = 184.88/x
  3. Step 3: Cross multiply
    288.38x = 398.06 × 184.88
  4. Step 4: Simplify right side
    288.38x = 73,590.42
  5. Step 5: Solve for x
    x = 73,590.42/288.38
  6. Step 6: Final answer
    x = 255.19

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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.