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Finding the Fourth Proportional to 376.28, 516.44 and 345.02

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Solution

The fourth proportional to 376.28, 516.44 and 345.02 is: 473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.28 : 516.44 = 345.02 : x
  2. Step 2: Convert to fraction form
    376.28/516.44 = 345.02/x
  3. Step 3: Cross multiply
    376.28x = 516.44 × 345.02
  4. Step 4: Simplify right side
    376.28x = 178,182.13
  5. Step 5: Solve for x
    x = 178,182.13/376.28
  6. Step 6: Final answer
    x = 473.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.