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Finding the Fourth Proportional to 378.14, 520.52 and 295.10

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Solution

The fourth proportional to 378.14, 520.52 and 295.10 is: 406.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.14 : 520.52 = 295.10 : x
  2. Step 2: Convert to fraction form
    378.14/520.52 = 295.10/x
  3. Step 3: Cross multiply
    378.14x = 520.52 × 295.10
  4. Step 4: Simplify right side
    378.14x = 153,605.45
  5. Step 5: Solve for x
    x = 153,605.45/378.14
  6. Step 6: Final answer
    x = 406.21

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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.