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Finding the Fourth Proportional to 1,859.94, 2,790.33 and 627.31

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Solution

The fourth proportional to 1,859.94, 2,790.33 and 627.31 is: 941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.94 : 2,790.33 = 627.31 : x
  2. Step 2: Convert to fraction form
    1,859.94/2,790.33 = 627.31/x
  3. Step 3: Cross multiply
    1,859.94x = 2,790.33 × 627.31
  4. Step 4: Simplify right side
    1,859.94x = 1,750,401.91
  5. Step 5: Solve for x
    x = 1,750,401.91/1,859.94
  6. Step 6: Final answer
    x = 941.11

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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.