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Finding the Fourth Proportional to 591.18, 817.90 and 580.82

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Solution

The fourth proportional to 591.18, 817.90 and 580.82 is: 803.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.18 : 817.90 = 580.82 : x
  2. Step 2: Convert to fraction form
    591.18/817.90 = 580.82/x
  3. Step 3: Cross multiply
    591.18x = 817.90 × 580.82
  4. Step 4: Simplify right side
    591.18x = 475,052.68
  5. Step 5: Solve for x
    x = 475,052.68/591.18
  6. Step 6: Final answer
    x = 803.57

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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.