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Finding the Fourth Proportional to 336.87, 502.79 and 328.67

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Solution

The fourth proportional to 336.87, 502.79 and 328.67 is: 490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.87 : 502.79 = 328.67 : x
  2. Step 2: Convert to fraction form
    336.87/502.79 = 328.67/x
  3. Step 3: Cross multiply
    336.87x = 502.79 × 328.67
  4. Step 4: Simplify right side
    336.87x = 165,251.99
  5. Step 5: Solve for x
    x = 165,251.99/336.87
  6. Step 6: Final answer
    x = 490.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.