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Finding the Fourth Proportional to 362.71, 543.48 and 208.81

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Solution

The fourth proportional to 362.71, 543.48 and 208.81 is: 312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.71 : 543.48 = 208.81 : x
  2. Step 2: Convert to fraction form
    362.71/543.48 = 208.81/x
  3. Step 3: Cross multiply
    362.71x = 543.48 × 208.81
  4. Step 4: Simplify right side
    362.71x = 113,484.06
  5. Step 5: Solve for x
    x = 113,484.06/362.71
  6. Step 6: Final answer
    x = 312.88

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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.