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Finding the Fourth Proportional to 316.04, 436.05 and 217.82

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Solution

The fourth proportional to 316.04, 436.05 and 217.82 is: 300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.04 : 436.05 = 217.82 : x
  2. Step 2: Convert to fraction form
    316.04/436.05 = 217.82/x
  3. Step 3: Cross multiply
    316.04x = 436.05 × 217.82
  4. Step 4: Simplify right side
    316.04x = 94,980.41
  5. Step 5: Solve for x
    x = 94,980.41/316.04
  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.