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Finding the Fourth Proportional to 400.25, 551.02 and 344.77

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Solution

The fourth proportional to 400.25, 551.02 and 344.77 is: 474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.25 : 551.02 = 344.77 : x
  2. Step 2: Convert to fraction form
    400.25/551.02 = 344.77/x
  3. Step 3: Cross multiply
    400.25x = 551.02 × 344.77
  4. Step 4: Simplify right side
    400.25x = 189,975.17
  5. Step 5: Solve for x
    x = 189,975.17/400.25
  6. Step 6: Final answer
    x = 474.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.