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Finding the Fourth Proportional to 482.39, 665.55 and 295.79

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Solution

The fourth proportional to 482.39, 665.55 and 295.79 is: 408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.39 : 665.55 = 295.79 : x
  2. Step 2: Convert to fraction form
    482.39/665.55 = 295.79/x
  3. Step 3: Cross multiply
    482.39x = 665.55 × 295.79
  4. Step 4: Simplify right side
    482.39x = 196,863.03
  5. Step 5: Solve for x
    x = 196,863.03/482.39
  6. Step 6: Final answer
    x = 408.10

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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.