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Finding the Fourth Proportional to 229.41, 316.61 and 142.03

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Solution

The fourth proportional to 229.41, 316.61 and 142.03 is: 196.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.41 : 316.61 = 142.03 : x
  2. Step 2: Convert to fraction form
    229.41/316.61 = 142.03/x
  3. Step 3: Cross multiply
    229.41x = 316.61 × 142.03
  4. Step 4: Simplify right side
    229.41x = 44,968.34
  5. Step 5: Solve for x
    x = 44,968.34/229.41
  6. Step 6: Final answer
    x = 196.02

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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.