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Finding the Fourth Proportional to 291.70, 400.37 and 267.07

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Solution

The fourth proportional to 291.70, 400.37 and 267.07 is: 366.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.70 : 400.37 = 267.07 : x
  2. Step 2: Convert to fraction form
    291.70/400.37 = 267.07/x
  3. Step 3: Cross multiply
    291.70x = 400.37 × 267.07
  4. Step 4: Simplify right side
    291.70x = 106,926.82
  5. Step 5: Solve for x
    x = 106,926.82/291.70
  6. Step 6: Final answer
    x = 366.56

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.