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Finding the Fourth Proportional to 374.44, 516.28 and 243.40

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Solution

The fourth proportional to 374.44, 516.28 and 243.40 is: 335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.44 : 516.28 = 243.40 : x
  2. Step 2: Convert to fraction form
    374.44/516.28 = 243.40/x
  3. Step 3: Cross multiply
    374.44x = 516.28 × 243.40
  4. Step 4: Simplify right side
    374.44x = 125,662.55
  5. Step 5: Solve for x
    x = 125,662.55/374.44
  6. Step 6: Final answer
    x = 335.60

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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.