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Finding the Fourth Proportional to 291.91, 438.15 and 241.07

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Solution

The fourth proportional to 291.91, 438.15 and 241.07 is: 361.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.91 : 438.15 = 241.07 : x
  2. Step 2: Convert to fraction form
    291.91/438.15 = 241.07/x
  3. Step 3: Cross multiply
    291.91x = 438.15 × 241.07
  4. Step 4: Simplify right side
    291.91x = 105,624.82
  5. Step 5: Solve for x
    x = 105,624.82/291.91
  6. Step 6: Final answer
    x = 361.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.