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Finding the Fourth Proportional to 291.35, 437.50 and 276.73

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Solution

The fourth proportional to 291.35, 437.50 and 276.73 is: 415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.35 : 437.50 = 276.73 : x
  2. Step 2: Convert to fraction form
    291.35/437.50 = 276.73/x
  3. Step 3: Cross multiply
    291.35x = 437.50 × 276.73
  4. Step 4: Simplify right side
    291.35x = 121,069.38
  5. Step 5: Solve for x
    x = 121,069.38/291.35
  6. Step 6: Final answer
    x = 415.55

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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.