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Finding the Fourth Proportional to 551.43, 827.80 and 435.96

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Solution

The fourth proportional to 551.43, 827.80 and 435.96 is: 654.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.43 : 827.80 = 435.96 : x
  2. Step 2: Convert to fraction form
    551.43/827.80 = 435.96/x
  3. Step 3: Cross multiply
    551.43x = 827.80 × 435.96
  4. Step 4: Simplify right side
    551.43x = 360,886.60
  5. Step 5: Solve for x
    x = 360,886.60/551.43
  6. Step 6: Final answer
    x = 654.46

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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.