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Finding the Fourth Proportional to 1,773.88, 2,661.42 and 619.62

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Solution

The fourth proportional to 1,773.88, 2,661.42 and 619.62 is: 929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,773.88 : 2,661.42 = 619.62 : x
  2. Step 2: Convert to fraction form
    1,773.88/2,661.42 = 619.62/x
  3. Step 3: Cross multiply
    1,773.88x = 2,661.42 × 619.62
  4. Step 4: Simplify right side
    1,773.88x = 1,649,069.06
  5. Step 5: Solve for x
    x = 1,649,069.06/1,773.88
  6. Step 6: Final answer
    x = 929.64

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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.