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Finding the Fourth Proportional to 551.43, 823.61 and 453.37

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Solution

The fourth proportional to 551.43, 823.61 and 453.37 is: 677.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.43 : 823.61 = 453.37 : x
  2. Step 2: Convert to fraction form
    551.43/823.61 = 453.37/x
  3. Step 3: Cross multiply
    551.43x = 823.61 × 453.37
  4. Step 4: Simplify right side
    551.43x = 373,400.07
  5. Step 5: Solve for x
    x = 373,400.07/551.43
  6. Step 6: Final answer
    x = 677.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.