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Finding the Fourth Proportional to 495.98, 685.03 and 329.89

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Solution

The fourth proportional to 495.98, 685.03 and 329.89 is: 455.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.98 : 685.03 = 329.89 : x
  2. Step 2: Convert to fraction form
    495.98/685.03 = 329.89/x
  3. Step 3: Cross multiply
    495.98x = 685.03 × 329.89
  4. Step 4: Simplify right side
    495.98x = 225,985.20
  5. Step 5: Solve for x
    x = 225,985.20/495.98
  6. Step 6: Final answer
    x = 455.64

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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.