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Finding the Fourth Proportional to 571.15, 788.20 and 350.22

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Solution

The fourth proportional to 571.15, 788.20 and 350.22 is: 483.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.15 : 788.20 = 350.22 : x
  2. Step 2: Convert to fraction form
    571.15/788.20 = 350.22/x
  3. Step 3: Cross multiply
    571.15x = 788.20 × 350.22
  4. Step 4: Simplify right side
    571.15x = 276,043.40
  5. Step 5: Solve for x
    x = 276,043.40/571.15
  6. Step 6: Final answer
    x = 483.31

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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.