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Finding the Fourth Proportional to 423.88, 585.51 and 326.85

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Solution

The fourth proportional to 423.88, 585.51 and 326.85 is: 451.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.88 : 585.51 = 326.85 : x
  2. Step 2: Convert to fraction form
    423.88/585.51 = 326.85/x
  3. Step 3: Cross multiply
    423.88x = 585.51 × 326.85
  4. Step 4: Simplify right side
    423.88x = 191,373.94
  5. Step 5: Solve for x
    x = 191,373.94/423.88
  6. Step 6: Final answer
    x = 451.48

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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.