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Finding the Fourth Proportional to 194.02, 268.10 and 147.31

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Solution

The fourth proportional to 194.02, 268.10 and 147.31 is: 203.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.02 : 268.10 = 147.31 : x
  2. Step 2: Convert to fraction form
    194.02/268.10 = 147.31/x
  3. Step 3: Cross multiply
    194.02x = 268.10 × 147.31
  4. Step 4: Simplify right side
    194.02x = 39,493.81
  5. Step 5: Solve for x
    x = 39,493.81/194.02
  6. Step 6: Final answer
    x = 203.56

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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.