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Finding the Fourth Proportional to 1,850.79, 2,776.29 and 755.13

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Solution

The fourth proportional to 1,850.79, 2,776.29 and 755.13 is: 1,132.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.79 : 2,776.29 = 755.13 : x
  2. Step 2: Convert to fraction form
    1,850.79/2,776.29 = 755.13/x
  3. Step 3: Cross multiply
    1,850.79x = 2,776.29 × 755.13
  4. Step 4: Simplify right side
    1,850.79x = 2,096,459.87
  5. Step 5: Solve for x
    x = 2,096,459.87/1,850.79
  6. Step 6: Final answer
    x = 1,132.74

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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.