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Finding the Fourth Proportional to 537.67, 805.95 and 208.51

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Solution

The fourth proportional to 537.67, 805.95 and 208.51 is: 312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.67 : 805.95 = 208.51 : x
  2. Step 2: Convert to fraction form
    537.67/805.95 = 208.51/x
  3. Step 3: Cross multiply
    537.67x = 805.95 × 208.51
  4. Step 4: Simplify right side
    537.67x = 168,046.62
  5. Step 5: Solve for x
    x = 168,046.62/537.67
  6. Step 6: Final answer
    x = 312.55

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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.