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Finding the Fourth Proportional to 1,010.88, 1,515.41 and 394.27

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Solution

The fourth proportional to 1,010.88, 1,515.41 and 394.27 is: 591.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.88 : 1,515.41 = 394.27 : x
  2. Step 2: Convert to fraction form
    1,010.88/1,515.41 = 394.27/x
  3. Step 3: Cross multiply
    1,010.88x = 1,515.41 × 394.27
  4. Step 4: Simplify right side
    1,010.88x = 597,476.42
  5. Step 5: Solve for x
    x = 597,476.42/1,010.88
  6. Step 6: Final answer
    x = 591.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.