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Finding the Fourth Proportional to 369.29, 509.18 and 275.73

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Solution

The fourth proportional to 369.29, 509.18 and 275.73 is: 380.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.29 : 509.18 = 275.73 : x
  2. Step 2: Convert to fraction form
    369.29/509.18 = 275.73/x
  3. Step 3: Cross multiply
    369.29x = 509.18 × 275.73
  4. Step 4: Simplify right side
    369.29x = 140,396.89
  5. Step 5: Solve for x
    x = 140,396.89/369.29
  6. Step 6: Final answer
    x = 380.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.