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Finding the Fourth Proportional to 495.53, 743.88 and 393.28

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Solution

The fourth proportional to 495.53, 743.88 and 393.28 is: 590.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.53 : 743.88 = 393.28 : x
  2. Step 2: Convert to fraction form
    495.53/743.88 = 393.28/x
  3. Step 3: Cross multiply
    495.53x = 743.88 × 393.28
  4. Step 4: Simplify right side
    495.53x = 292,549.44
  5. Step 5: Solve for x
    x = 292,549.44/495.53
  6. Step 6: Final answer
    x = 590.37

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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.