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Finding the Fourth Proportional to 323.03, 486.37 and 284.76

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Solution

The fourth proportional to 323.03, 486.37 and 284.76 is: 428.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.03 : 486.37 = 284.76 : x
  2. Step 2: Convert to fraction form
    323.03/486.37 = 284.76/x
  3. Step 3: Cross multiply
    323.03x = 486.37 × 284.76
  4. Step 4: Simplify right side
    323.03x = 138,498.01
  5. Step 5: Solve for x
    x = 138,498.01/323.03
  6. Step 6: Final answer
    x = 428.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.