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Finding the Fourth Proportional to 498.28, 688.26 and 495.04

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Solution

The fourth proportional to 498.28, 688.26 and 495.04 is: 683.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.28 : 688.26 = 495.04 : x
  2. Step 2: Convert to fraction form
    498.28/688.26 = 495.04/x
  3. Step 3: Cross multiply
    498.28x = 688.26 × 495.04
  4. Step 4: Simplify right side
    498.28x = 340,716.23
  5. Step 5: Solve for x
    x = 340,716.23/498.28
  6. Step 6: Final answer
    x = 683.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.