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Finding the Fourth Proportional to 571.05, 787.93 and 374.42

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Solution

The fourth proportional to 571.05, 787.93 and 374.42 is: 516.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.05 : 787.93 = 374.42 : x
  2. Step 2: Convert to fraction form
    571.05/787.93 = 374.42/x
  3. Step 3: Cross multiply
    571.05x = 787.93 × 374.42
  4. Step 4: Simplify right side
    571.05x = 295,017.78
  5. Step 5: Solve for x
    x = 295,017.78/571.05
  6. Step 6: Final answer
    x = 516.62

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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.