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Finding the Fourth Proportional to 495.44, 743.12 and 312.30

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Solution

The fourth proportional to 495.44, 743.12 and 312.30 is: 468.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.44 : 743.12 = 312.30 : x
  2. Step 2: Convert to fraction form
    495.44/743.12 = 312.30/x
  3. Step 3: Cross multiply
    495.44x = 743.12 × 312.30
  4. Step 4: Simplify right side
    495.44x = 232,076.38
  5. Step 5: Solve for x
    x = 232,076.38/495.44
  6. Step 6: Final answer
    x = 468.42

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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.