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Finding the Fourth Proportional to 338.96, 468.06 and 208.16

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Solution

The fourth proportional to 338.96, 468.06 and 208.16 is: 287.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.96 : 468.06 = 208.16 : x
  2. Step 2: Convert to fraction form
    338.96/468.06 = 208.16/x
  3. Step 3: Cross multiply
    338.96x = 468.06 × 208.16
  4. Step 4: Simplify right side
    338.96x = 97,431.37
  5. Step 5: Solve for x
    x = 97,431.37/338.96
  6. Step 6: Final answer
    x = 287.44

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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.