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Finding the Fourth Proportional to 1,486.26, 2,227.95 and 620.10

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Solution

The fourth proportional to 1,486.26, 2,227.95 and 620.10 is: 929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.26 : 2,227.95 = 620.10 : x
  2. Step 2: Convert to fraction form
    1,486.26/2,227.95 = 620.10/x
  3. Step 3: Cross multiply
    1,486.26x = 2,227.95 × 620.10
  4. Step 4: Simplify right side
    1,486.26x = 1,381,551.80
  5. Step 5: Solve for x
    x = 1,381,551.80/1,486.26
  6. Step 6: Final answer
    x = 929.55

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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.