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Finding the Fourth Proportional to 343.60, 474.20 and 203.65

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Solution

The fourth proportional to 343.60, 474.20 and 203.65 is: 281.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.60 : 474.20 = 203.65 : x
  2. Step 2: Convert to fraction form
    343.60/474.20 = 203.65/x
  3. Step 3: Cross multiply
    343.60x = 474.20 × 203.65
  4. Step 4: Simplify right side
    343.60x = 96,570.83
  5. Step 5: Solve for x
    x = 96,570.83/343.60
  6. Step 6: Final answer
    x = 281.06

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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.