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Finding the Fourth Proportional to 571.56, 788.81 and 350.65

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Solution

The fourth proportional to 571.56, 788.81 and 350.65 is: 483.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.56 : 788.81 = 350.65 : x
  2. Step 2: Convert to fraction form
    571.56/788.81 = 350.65/x
  3. Step 3: Cross multiply
    571.56x = 788.81 × 350.65
  4. Step 4: Simplify right side
    571.56x = 276,596.23
  5. Step 5: Solve for x
    x = 276,596.23/571.56
  6. Step 6: Final answer
    x = 483.93

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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.