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Finding the Fourth Proportional to 291.14, 399.89 and 273.07

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Solution

The fourth proportional to 291.14, 399.89 and 273.07 is: 375.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.14 : 399.89 = 273.07 : x
  2. Step 2: Convert to fraction form
    291.14/399.89 = 273.07/x
  3. Step 3: Cross multiply
    291.14x = 399.89 × 273.07
  4. Step 4: Simplify right side
    291.14x = 109,197.61
  5. Step 5: Solve for x
    x = 109,197.61/291.14
  6. Step 6: Final answer
    x = 375.06

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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.