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Finding the Fourth Proportional to 571.03, 787.80 and 374.65

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Solution

The fourth proportional to 571.03, 787.80 and 374.65 is: 516.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.03 : 787.80 = 374.65 : x
  2. Step 2: Convert to fraction form
    571.03/787.80 = 374.65/x
  3. Step 3: Cross multiply
    571.03x = 787.80 × 374.65
  4. Step 4: Simplify right side
    571.03x = 295,145.33
  5. Step 5: Solve for x
    x = 295,145.33/571.03
  6. Step 6: Final answer
    x = 516.87

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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.