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Finding the Fourth Proportional to 459.74, 634.20 and 273.18

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Solution

The fourth proportional to 459.74, 634.20 and 273.18 is: 376.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.74 : 634.20 = 273.18 : x
  2. Step 2: Convert to fraction form
    459.74/634.20 = 273.18/x
  3. Step 3: Cross multiply
    459.74x = 634.20 × 273.18
  4. Step 4: Simplify right side
    459.74x = 173,250.76
  5. Step 5: Solve for x
    x = 173,250.76/459.74
  6. Step 6: Final answer
    x = 376.85

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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.