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Finding the Fourth Proportional to 378.10, 520.68 and 363.52

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Solution

The fourth proportional to 378.10, 520.68 and 363.52 is: 500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.10 : 520.68 = 363.52 : x
  2. Step 2: Convert to fraction form
    378.10/520.68 = 363.52/x
  3. Step 3: Cross multiply
    378.10x = 520.68 × 363.52
  4. Step 4: Simplify right side
    378.10x = 189,277.59
  5. Step 5: Solve for x
    x = 189,277.59/378.10
  6. Step 6: Final answer
    x = 500.60

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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.