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Finding the Fourth Proportional to 495.80, 743.97 and 313.28

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Solution

The fourth proportional to 495.80, 743.97 and 313.28 is: 470.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.80 : 743.97 = 313.28 : x
  2. Step 2: Convert to fraction form
    495.80/743.97 = 313.28/x
  3. Step 3: Cross multiply
    495.80x = 743.97 × 313.28
  4. Step 4: Simplify right side
    495.80x = 233,070.92
  5. Step 5: Solve for x
    x = 233,070.92/495.80
  6. Step 6: Final answer
    x = 470.09

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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.