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Finding the Fourth Proportional to 1,851.10, 2,776.05 and 618.19

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Solution

The fourth proportional to 1,851.10, 2,776.05 and 618.19 is: 927.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.10 : 2,776.05 = 618.19 : x
  2. Step 2: Convert to fraction form
    1,851.10/2,776.05 = 618.19/x
  3. Step 3: Cross multiply
    1,851.10x = 2,776.05 × 618.19
  4. Step 4: Simplify right side
    1,851.10x = 1,716,126.35
  5. Step 5: Solve for x
    x = 1,716,126.35/1,851.10
  6. Step 6: Final answer
    x = 927.08

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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.