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Finding the Fourth Proportional to 376.78, 520.20 and 237.10

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Solution

The fourth proportional to 376.78, 520.20 and 237.10 is: 327.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.78 : 520.20 = 237.10 : x
  2. Step 2: Convert to fraction form
    376.78/520.20 = 237.10/x
  3. Step 3: Cross multiply
    376.78x = 520.20 × 237.10
  4. Step 4: Simplify right side
    376.78x = 123,339.42
  5. Step 5: Solve for x
    x = 123,339.42/376.78
  6. Step 6: Final answer
    x = 327.35

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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.