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Finding the Fourth Proportional to 506.45, 759.89 and 275.50

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Solution

The fourth proportional to 506.45, 759.89 and 275.50 is: 413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.45 : 759.89 = 275.50 : x
  2. Step 2: Convert to fraction form
    506.45/759.89 = 275.50/x
  3. Step 3: Cross multiply
    506.45x = 759.89 × 275.50
  4. Step 4: Simplify right side
    506.45x = 209,349.70
  5. Step 5: Solve for x
    x = 209,349.70/506.45
  6. Step 6: Final answer
    x = 413.37

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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.