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Finding the Fourth Proportional to 343.96, 474.65 and 188.71

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Solution

The fourth proportional to 343.96, 474.65 and 188.71 is: 260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.96 : 474.65 = 188.71 : x
  2. Step 2: Convert to fraction form
    343.96/474.65 = 188.71/x
  3. Step 3: Cross multiply
    343.96x = 474.65 × 188.71
  4. Step 4: Simplify right side
    343.96x = 89,568.83
  5. Step 5: Solve for x
    x = 89,568.83/343.96
  6. Step 6: Final answer
    x = 260.41

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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.