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Finding the Fourth Proportional to 316.17, 436.03 and 205.60

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Solution

The fourth proportional to 316.17, 436.03 and 205.60 is: 283.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.17 : 436.03 = 205.60 : x
  2. Step 2: Convert to fraction form
    316.17/436.03 = 205.60/x
  3. Step 3: Cross multiply
    316.17x = 436.03 × 205.60
  4. Step 4: Simplify right side
    316.17x = 89,647.77
  5. Step 5: Solve for x
    x = 89,647.77/316.17
  6. Step 6: Final answer
    x = 283.54

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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.