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Finding the Fourth Proportional to 316.59, 436.86 and 185.60

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Solution

The fourth proportional to 316.59, 436.86 and 185.60 is: 256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.59 : 436.86 = 185.60 : x
  2. Step 2: Convert to fraction form
    316.59/436.86 = 185.60/x
  3. Step 3: Cross multiply
    316.59x = 436.86 × 185.60
  4. Step 4: Simplify right side
    316.59x = 81,079.03
  5. Step 5: Solve for x
    x = 81,079.03/316.59
  6. Step 6: Final answer
    x = 256.10

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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.