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Finding the Fourth Proportional to 340.11, 468.86 and 208.89

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Solution

The fourth proportional to 340.11, 468.86 and 208.89 is: 287.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.11 : 468.86 = 208.89 : x
  2. Step 2: Convert to fraction form
    340.11/468.86 = 208.89/x
  3. Step 3: Cross multiply
    340.11x = 468.86 × 208.89
  4. Step 4: Simplify right side
    340.11x = 97,939.12
  5. Step 5: Solve for x
    x = 97,939.12/340.11
  6. Step 6: Final answer
    x = 287.96

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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.