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Finding the Fourth Proportional to 1,863.19, 2,795.18 and 767.55

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Solution

The fourth proportional to 1,863.19, 2,795.18 and 767.55 is: 1,151.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.19 : 2,795.18 = 767.55 : x
  2. Step 2: Convert to fraction form
    1,863.19/2,795.18 = 767.55/x
  3. Step 3: Cross multiply
    1,863.19x = 2,795.18 × 767.55
  4. Step 4: Simplify right side
    1,863.19x = 2,145,440.41
  5. Step 5: Solve for x
    x = 2,145,440.41/1,863.19
  6. Step 6: Final answer
    x = 1,151.49

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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.