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Finding the Fourth Proportional to 591.39, 817.02 and 550.40

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Solution

The fourth proportional to 591.39, 817.02 and 550.40 is: 760.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.39 : 817.02 = 550.40 : x
  2. Step 2: Convert to fraction form
    591.39/817.02 = 550.40/x
  3. Step 3: Cross multiply
    591.39x = 817.02 × 550.40
  4. Step 4: Simplify right side
    591.39x = 449,683.72
  5. Step 5: Solve for x
    x = 449,683.72/591.39
  6. Step 6: Final answer
    x = 760.38

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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.