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Finding the Fourth Proportional to 316.04, 436.14 and 217.88

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Solution

The fourth proportional to 316.04, 436.14 and 217.88 is: 300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.04 : 436.14 = 217.88 : x
  2. Step 2: Convert to fraction form
    316.04/436.14 = 217.88/x
  3. Step 3: Cross multiply
    316.04x = 436.14 × 217.88
  4. Step 4: Simplify right side
    316.04x = 95,026.18
  5. Step 5: Solve for x
    x = 95,026.18/316.04
  6. Step 6: Final answer
    x = 300.68

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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.