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Finding the Fourth Proportional to 526.20, 789.52 and 371.76

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Solution

The fourth proportional to 526.20, 789.52 and 371.76 is: 557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.20 : 789.52 = 371.76 : x
  2. Step 2: Convert to fraction form
    526.20/789.52 = 371.76/x
  3. Step 3: Cross multiply
    526.20x = 789.52 × 371.76
  4. Step 4: Simplify right side
    526.20x = 293,511.96
  5. Step 5: Solve for x
    x = 293,511.96/526.20
  6. Step 6: Final answer
    x = 557.80

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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.