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Finding the Fourth Proportional to 526.32, 789.48 and 217.83

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Solution

The fourth proportional to 526.32, 789.48 and 217.83 is: 326.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.32 : 789.48 = 217.83 : x
  2. Step 2: Convert to fraction form
    526.32/789.48 = 217.83/x
  3. Step 3: Cross multiply
    526.32x = 789.48 × 217.83
  4. Step 4: Simplify right side
    526.32x = 171,971.34
  5. Step 5: Solve for x
    x = 171,971.34/526.32
  6. Step 6: Final answer
    x = 326.74

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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.