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Finding the Fourth Proportional to 247.40, 343 and 235.08

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Solution

The fourth proportional to 247.40, 343 and 235.08 is: 325.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.40 : 343 = 235.08 : x
  2. Step 2: Convert to fraction form
    247.40/343 = 235.08/x
  3. Step 3: Cross multiply
    247.40x = 343 × 235.08
  4. Step 4: Simplify right side
    247.40x = 80,632.44
  5. Step 5: Solve for x
    x = 80,632.44/247.40
  6. Step 6: Final answer
    x = 325.92

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.