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Finding the Fourth Proportional to 336.77, 505.10 and 214.65

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Solution

The fourth proportional to 336.77, 505.10 and 214.65 is: 321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.77 : 505.10 = 214.65 : x
  2. Step 2: Convert to fraction form
    336.77/505.10 = 214.65/x
  3. Step 3: Cross multiply
    336.77x = 505.10 × 214.65
  4. Step 4: Simplify right side
    336.77x = 108,418.64
  5. Step 5: Solve for x
    x = 108,418.64/336.77
  6. Step 6: Final answer
    x = 321.94

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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.