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Finding the Fourth Proportional to 1,851.03, 2,775.78 and 618.12

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Solution

The fourth proportional to 1,851.03, 2,775.78 and 618.12 is: 926.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.03 : 2,775.78 = 618.12 : x
  2. Step 2: Convert to fraction form
    1,851.03/2,775.78 = 618.12/x
  3. Step 3: Cross multiply
    1,851.03x = 2,775.78 × 618.12
  4. Step 4: Simplify right side
    1,851.03x = 1,715,765.13
  5. Step 5: Solve for x
    x = 1,715,765.13/1,851.03
  6. Step 6: Final answer
    x = 926.92

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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.