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Finding the Fourth Proportional to 1,852.07, 2,777.07 and 618.81

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Solution

The fourth proportional to 1,852.07, 2,777.07 and 618.81 is: 927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.07 : 2,777.07 = 618.81 : x
  2. Step 2: Convert to fraction form
    1,852.07/2,777.07 = 618.81/x
  3. Step 3: Cross multiply
    1,852.07x = 2,777.07 × 618.81
  4. Step 4: Simplify right side
    1,852.07x = 1,718,478.69
  5. Step 5: Solve for x
    x = 1,718,478.69/1,852.07
  6. Step 6: Final answer
    x = 927.87

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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.