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Finding the Fourth Proportional to 335.61, 462.91 and 308.07

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Solution

The fourth proportional to 335.61, 462.91 and 308.07 is: 424.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.61 : 462.91 = 308.07 : x
  2. Step 2: Convert to fraction form
    335.61/462.91 = 308.07/x
  3. Step 3: Cross multiply
    335.61x = 462.91 × 308.07
  4. Step 4: Simplify right side
    335.61x = 142,608.68
  5. Step 5: Solve for x
    x = 142,608.68/335.61
  6. Step 6: Final answer
    x = 424.92

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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.