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Finding the Fourth Proportional to 468.12, 701.50 and 321.72

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Solution

The fourth proportional to 468.12, 701.50 and 321.72 is: 482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.12 : 701.50 = 321.72 : x
  2. Step 2: Convert to fraction form
    468.12/701.50 = 321.72/x
  3. Step 3: Cross multiply
    468.12x = 701.50 × 321.72
  4. Step 4: Simplify right side
    468.12x = 225,686.58
  5. Step 5: Solve for x
    x = 225,686.58/468.12
  6. Step 6: Final answer
    x = 482.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.