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Finding the Fourth Proportional to 336.48, 464.15 and 216.65

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Solution

The fourth proportional to 336.48, 464.15 and 216.65 is: 298.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.48 : 464.15 = 216.65 : x
  2. Step 2: Convert to fraction form
    336.48/464.15 = 216.65/x
  3. Step 3: Cross multiply
    336.48x = 464.15 × 216.65
  4. Step 4: Simplify right side
    336.48x = 100,554.69
  5. Step 5: Solve for x
    x = 100,554.69/336.48
  6. Step 6: Final answer
    x = 298.84

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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.