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Finding the Fourth Proportional to 338.80, 466.68 and 261.04

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Solution

The fourth proportional to 338.80, 466.68 and 261.04 is: 359.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.80 : 466.68 = 261.04 : x
  2. Step 2: Convert to fraction form
    338.80/466.68 = 261.04/x
  3. Step 3: Cross multiply
    338.80x = 466.68 × 261.04
  4. Step 4: Simplify right side
    338.80x = 121,822.15
  5. Step 5: Solve for x
    x = 121,822.15/338.80
  6. Step 6: Final answer
    x = 359.57

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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.