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Finding the Fourth Proportional to 551.68, 827.62 and 186.45

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Solution

The fourth proportional to 551.68, 827.62 and 186.45 is: 279.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.68 : 827.62 = 186.45 : x
  2. Step 2: Convert to fraction form
    551.68/827.62 = 186.45/x
  3. Step 3: Cross multiply
    551.68x = 827.62 × 186.45
  4. Step 4: Simplify right side
    551.68x = 154,306.18
  5. Step 5: Solve for x
    x = 154,306.18/551.68
  6. Step 6: Final answer
    x = 279.70

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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.