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Finding the Fourth Proportional to 373, 514.80 and 217.75

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Solution

The fourth proportional to 373, 514.80 and 217.75 is: 300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    373 : 514.80 = 217.75 : x
  2. Step 2: Convert to fraction form
    373/514.80 = 217.75/x
  3. Step 3: Cross multiply
    373x = 514.80 × 217.75
  4. Step 4: Simplify right side
    373x = 112,097.70
  5. Step 5: Solve for x
    x = 112,097.70/373
  6. Step 6: Final answer
    x = 300.53

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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.