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Finding the Fourth Proportional to 527.02, 789.31 and 508.80

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Solution

The fourth proportional to 527.02, 789.31 and 508.80 is: 762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.02 : 789.31 = 508.80 : x
  2. Step 2: Convert to fraction form
    527.02/789.31 = 508.80/x
  3. Step 3: Cross multiply
    527.02x = 789.31 × 508.80
  4. Step 4: Simplify right side
    527.02x = 401,600.93
  5. Step 5: Solve for x
    x = 401,600.93/527.02
  6. Step 6: Final answer
    x = 762.02

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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.