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Finding the Fourth Proportional to 343.56, 474.12 and 188.31

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Solution

The fourth proportional to 343.56, 474.12 and 188.31 is: 259.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.56 : 474.12 = 188.31 : x
  2. Step 2: Convert to fraction form
    343.56/474.12 = 188.31/x
  3. Step 3: Cross multiply
    343.56x = 474.12 × 188.31
  4. Step 4: Simplify right side
    343.56x = 89,281.54
  5. Step 5: Solve for x
    x = 89,281.54/343.56
  6. Step 6: Final answer
    x = 259.87

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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.