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Finding the Fourth Proportional to 319.76, 441.07 and 267.61

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Solution

The fourth proportional to 319.76, 441.07 and 267.61 is: 369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.76 : 441.07 = 267.61 : x
  2. Step 2: Convert to fraction form
    319.76/441.07 = 267.61/x
  3. Step 3: Cross multiply
    319.76x = 441.07 × 267.61
  4. Step 4: Simplify right side
    319.76x = 118,035.01
  5. Step 5: Solve for x
    x = 118,035.01/319.76
  6. Step 6: Final answer
    x = 369.13

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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.