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Finding the Fourth Proportional to 571.38, 788.60 and 350.30

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Solution

The fourth proportional to 571.38, 788.60 and 350.30 is: 483.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.38 : 788.60 = 350.30 : x
  2. Step 2: Convert to fraction form
    571.38/788.60 = 350.30/x
  3. Step 3: Cross multiply
    571.38x = 788.60 × 350.30
  4. Step 4: Simplify right side
    571.38x = 276,246.58
  5. Step 5: Solve for x
    x = 276,246.58/571.38
  6. Step 6: Final answer
    x = 483.47

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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.