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Finding the Fourth Proportional to 373.06, 514.74 and 217.78

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Solution

The fourth proportional to 373.06, 514.74 and 217.78 is: 300.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.06 : 514.74 = 217.78 : x
  2. Step 2: Convert to fraction form
    373.06/514.74 = 217.78/x
  3. Step 3: Cross multiply
    373.06x = 514.74 × 217.78
  4. Step 4: Simplify right side
    373.06x = 112,100.08
  5. Step 5: Solve for x
    x = 112,100.08/373.06
  6. Step 6: Final answer
    x = 300.49

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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.