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Finding the Fourth Proportional to 571.33, 787.15 and 374.50

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Solution

The fourth proportional to 571.33, 787.15 and 374.50 is: 515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.33 : 787.15 = 374.50 : x
  2. Step 2: Convert to fraction form
    571.33/787.15 = 374.50/x
  3. Step 3: Cross multiply
    571.33x = 787.15 × 374.50
  4. Step 4: Simplify right side
    571.33x = 294,787.68
  5. Step 5: Solve for x
    x = 294,787.68/571.33
  6. Step 6: Final answer
    x = 515.97

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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.