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Finding the Fourth Proportional to 482.19, 665.42 and 261.13

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Solution

The fourth proportional to 482.19, 665.42 and 261.13 is: 360.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.19 : 665.42 = 261.13 : x
  2. Step 2: Convert to fraction form
    482.19/665.42 = 261.13/x
  3. Step 3: Cross multiply
    482.19x = 665.42 × 261.13
  4. Step 4: Simplify right side
    482.19x = 173,760.65
  5. Step 5: Solve for x
    x = 173,760.65/482.19
  6. Step 6: Final answer
    x = 360.36

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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.