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Finding the Fourth Proportional to 335.04, 461.78 and 308.22

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Solution

The fourth proportional to 335.04, 461.78 and 308.22 is: 424.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.04 : 461.78 = 308.22 : x
  2. Step 2: Convert to fraction form
    335.04/461.78 = 308.22/x
  3. Step 3: Cross multiply
    335.04x = 461.78 × 308.22
  4. Step 4: Simplify right side
    335.04x = 142,329.83
  5. Step 5: Solve for x
    x = 142,329.83/335.04
  6. Step 6: Final answer
    x = 424.81

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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.