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Finding the Fourth Proportional to 495.16, 743.28 and 339.10

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Solution

The fourth proportional to 495.16, 743.28 and 339.10 is: 509.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.16 : 743.28 = 339.10 : x
  2. Step 2: Convert to fraction form
    495.16/743.28 = 339.10/x
  3. Step 3: Cross multiply
    495.16x = 743.28 × 339.10
  4. Step 4: Simplify right side
    495.16x = 252,046.25
  5. Step 5: Solve for x
    x = 252,046.25/495.16
  6. Step 6: Final answer
    x = 509.02

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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.