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Finding the Fourth Proportional to 344.60, 516.90 and 292.40

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Solution

The fourth proportional to 344.60, 516.90 and 292.40 is: 438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.60 : 516.90 = 292.40 : x
  2. Step 2: Convert to fraction form
    344.60/516.90 = 292.40/x
  3. Step 3: Cross multiply
    344.60x = 516.90 × 292.40
  4. Step 4: Simplify right side
    344.60x = 151,141.56
  5. Step 5: Solve for x
    x = 151,141.56/344.60
  6. Step 6: Final answer
    x = 438.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.