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Finding the Fourth Proportional to 526.46, 789.69 and 218.10

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Solution

The fourth proportional to 526.46, 789.69 and 218.10 is: 327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.46 : 789.69 = 218.10 : x
  2. Step 2: Convert to fraction form
    526.46/789.69 = 218.10/x
  3. Step 3: Cross multiply
    526.46x = 789.69 × 218.10
  4. Step 4: Simplify right side
    526.46x = 172,231.39
  5. Step 5: Solve for x
    x = 172,231.39/526.46
  6. Step 6: Final answer
    x = 327.15

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Similar ratio
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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.