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Finding the Fourth Proportional to 679.93, 936.95 and 482.89

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Solution

The fourth proportional to 679.93, 936.95 and 482.89 is: 665.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.93 : 936.95 = 482.89 : x
  2. Step 2: Convert to fraction form
    679.93/936.95 = 482.89/x
  3. Step 3: Cross multiply
    679.93x = 936.95 × 482.89
  4. Step 4: Simplify right side
    679.93x = 452,440.31
  5. Step 5: Solve for x
    x = 452,440.31/679.93
  6. Step 6: Final answer
    x = 665.43

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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.