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Finding the Fourth Proportional to 323.60, 484.92 and 312.56

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Solution

The fourth proportional to 323.60, 484.92 and 312.56 is: 468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.60 : 484.92 = 312.56 : x
  2. Step 2: Convert to fraction form
    323.60/484.92 = 312.56/x
  3. Step 3: Cross multiply
    323.60x = 484.92 × 312.56
  4. Step 4: Simplify right side
    323.60x = 151,566.60
  5. Step 5: Solve for x
    x = 151,566.60/323.60
  6. Step 6: Final answer
    x = 468.38

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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.