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Finding the Fourth Proportional to 316.36, 436.46 and 191.93

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Solution

The fourth proportional to 316.36, 436.46 and 191.93 is: 264.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.36 : 436.46 = 191.93 : x
  2. Step 2: Convert to fraction form
    316.36/436.46 = 191.93/x
  3. Step 3: Cross multiply
    316.36x = 436.46 × 191.93
  4. Step 4: Simplify right side
    316.36x = 83,766.63
  5. Step 5: Solve for x
    x = 83,766.63/316.36
  6. Step 6: Final answer
    x = 264.78

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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.