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Finding the Fourth Proportional to 209.84, 315.11 and 175.89

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Solution

The fourth proportional to 209.84, 315.11 and 175.89 is: 264.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.84 : 315.11 = 175.89 : x
  2. Step 2: Convert to fraction form
    209.84/315.11 = 175.89/x
  3. Step 3: Cross multiply
    209.84x = 315.11 × 175.89
  4. Step 4: Simplify right side
    209.84x = 55,425.14
  5. Step 5: Solve for x
    x = 55,425.14/209.84
  6. Step 6: Final answer
    x = 264.13

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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.