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Finding the Fourth Proportional to 536.71, 805.17 and 262.78

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Solution

The fourth proportional to 536.71, 805.17 and 262.78 is: 394.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.71 : 805.17 = 262.78 : x
  2. Step 2: Convert to fraction form
    536.71/805.17 = 262.78/x
  3. Step 3: Cross multiply
    536.71x = 805.17 × 262.78
  4. Step 4: Simplify right side
    536.71x = 211,582.57
  5. Step 5: Solve for x
    x = 211,582.57/536.71
  6. Step 6: Final answer
    x = 394.22

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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.