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Finding the Fourth Proportional to 1,518.78, 2,278.31 and 594.41

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Solution

The fourth proportional to 1,518.78, 2,278.31 and 594.41 is: 891.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.78 : 2,278.31 = 594.41 : x
  2. Step 2: Convert to fraction form
    1,518.78/2,278.31 = 594.41/x
  3. Step 3: Cross multiply
    1,518.78x = 2,278.31 × 594.41
  4. Step 4: Simplify right side
    1,518.78x = 1,354,235.88
  5. Step 5: Solve for x
    x = 1,354,235.88/1,518.78
  6. Step 6: Final answer
    x = 891.66

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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.