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Finding the Fourth Proportional to 551.81, 828.08 and 369.29

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Solution

The fourth proportional to 551.81, 828.08 and 369.29 is: 554.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.81 : 828.08 = 369.29 : x
  2. Step 2: Convert to fraction form
    551.81/828.08 = 369.29/x
  3. Step 3: Cross multiply
    551.81x = 828.08 × 369.29
  4. Step 4: Simplify right side
    551.81x = 305,801.66
  5. Step 5: Solve for x
    x = 305,801.66/551.81
  6. Step 6: Final answer
    x = 554.18

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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.