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Finding the Fourth Proportional to 1,015.14, 1,522.17 and 551.82

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Solution

The fourth proportional to 1,015.14, 1,522.17 and 551.82 is: 827.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.14 : 1,522.17 = 551.82 : x
  2. Step 2: Convert to fraction form
    1,015.14/1,522.17 = 551.82/x
  3. Step 3: Cross multiply
    1,015.14x = 1,522.17 × 551.82
  4. Step 4: Simplify right side
    1,015.14x = 839,963.85
  5. Step 5: Solve for x
    x = 839,963.85/1,015.14
  6. Step 6: Final answer
    x = 827.44

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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.