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Finding the Fourth Proportional to 679.98, 937.02 and 483.15

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Solution

The fourth proportional to 679.98, 937.02 and 483.15 is: 665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.98 : 937.02 = 483.15 : x
  2. Step 2: Convert to fraction form
    679.98/937.02 = 483.15/x
  3. Step 3: Cross multiply
    679.98x = 937.02 × 483.15
  4. Step 4: Simplify right side
    679.98x = 452,721.21
  5. Step 5: Solve for x
    x = 452,721.21/679.98
  6. Step 6: Final answer
    x = 665.79

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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.