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Finding the Fourth Proportional to 551.51, 827.01 and 277.55

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Solution

The fourth proportional to 551.51, 827.01 and 277.55 is: 416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.51 : 827.01 = 277.55 : x
  2. Step 2: Convert to fraction form
    551.51/827.01 = 277.55/x
  3. Step 3: Cross multiply
    551.51x = 827.01 × 277.55
  4. Step 4: Simplify right side
    551.51x = 229,536.63
  5. Step 5: Solve for x
    x = 229,536.63/551.51
  6. Step 6: Final answer
    x = 416.20

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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.