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Finding the Fourth Proportional to 312.62, 468.42 and 107.08

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Solution

The fourth proportional to 312.62, 468.42 and 107.08 is: 160.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.62 : 468.42 = 107.08 : x
  2. Step 2: Convert to fraction form
    312.62/468.42 = 107.08/x
  3. Step 3: Cross multiply
    312.62x = 468.42 × 107.08
  4. Step 4: Simplify right side
    312.62x = 50,156.97
  5. Step 5: Solve for x
    x = 50,156.97/312.62
  6. Step 6: Final answer
    x = 160.44

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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.