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Finding the Fourth Proportional to 291.39, 439.09 and 241.16

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Solution

The fourth proportional to 291.39, 439.09 and 241.16 is: 363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.39 : 439.09 = 241.16 : x
  2. Step 2: Convert to fraction form
    291.39/439.09 = 241.16/x
  3. Step 3: Cross multiply
    291.39x = 439.09 × 241.16
  4. Step 4: Simplify right side
    291.39x = 105,890.94
  5. Step 5: Solve for x
    x = 105,890.94/291.39
  6. Step 6: Final answer
    x = 363.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.