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Finding the Fourth Proportional to 1,860.41, 2,790.88 and 628.18

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Solution

The fourth proportional to 1,860.41, 2,790.88 and 628.18 is: 942.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.41 : 2,790.88 = 628.18 : x
  2. Step 2: Convert to fraction form
    1,860.41/2,790.88 = 628.18/x
  3. Step 3: Cross multiply
    1,860.41x = 2,790.88 × 628.18
  4. Step 4: Simplify right side
    1,860.41x = 1,753,157.90
  5. Step 5: Solve for x
    x = 1,753,157.90/1,860.41
  6. Step 6: Final answer
    x = 942.35

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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.