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Finding the Fourth Proportional to 551.24, 827.01 and 258.74

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Solution

The fourth proportional to 551.24, 827.01 and 258.74 is: 388.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.24 : 827.01 = 258.74 : x
  2. Step 2: Convert to fraction form
    551.24/827.01 = 258.74/x
  3. Step 3: Cross multiply
    551.24x = 827.01 × 258.74
  4. Step 4: Simplify right side
    551.24x = 213,976.43
  5. Step 5: Solve for x
    x = 213,976.43/551.24
  6. Step 6: Final answer
    x = 388.17

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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.