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Finding the Fourth Proportional to 316.06, 436.15 and 176.18

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Solution

The fourth proportional to 316.06, 436.15 and 176.18 is: 243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.06 : 436.15 = 176.18 : x
  2. Step 2: Convert to fraction form
    316.06/436.15 = 176.18/x
  3. Step 3: Cross multiply
    316.06x = 436.15 × 176.18
  4. Step 4: Simplify right side
    316.06x = 76,840.91
  5. Step 5: Solve for x
    x = 76,840.91/316.06
  6. Step 6: Final answer
    x = 243.12

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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.