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Finding the Fourth Proportional to 2,188.01, 3,281.02 and 627.65

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Solution

The fourth proportional to 2,188.01, 3,281.02 and 627.65 is: 941.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.01 : 3,281.02 = 627.65 : x
  2. Step 2: Convert to fraction form
    2,188.01/3,281.02 = 627.65/x
  3. Step 3: Cross multiply
    2,188.01x = 3,281.02 × 627.65
  4. Step 4: Simplify right side
    2,188.01x = 2,059,332.20
  5. Step 5: Solve for x
    x = 2,059,332.20/2,188.01
  6. Step 6: Final answer
    x = 941.19

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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.