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Finding the Fourth Proportional to 591.16, 816.22 and 486.36

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Solution

The fourth proportional to 591.16, 816.22 and 486.36 is: 671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.16 : 816.22 = 486.36 : x
  2. Step 2: Convert to fraction form
    591.16/816.22 = 486.36/x
  3. Step 3: Cross multiply
    591.16x = 816.22 × 486.36
  4. Step 4: Simplify right side
    591.16x = 396,976.76
  5. Step 5: Solve for x
    x = 396,976.76/591.16
  6. Step 6: Final answer
    x = 671.52

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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.