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Finding the Fourth Proportional to 1,186.76, 1,778.16 and 1,050.68

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Solution

The fourth proportional to 1,186.76, 1,778.16 and 1,050.68 is: 1,574.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.76 : 1,778.16 = 1,050.68 : x
  2. Step 2: Convert to fraction form
    1,186.76/1,778.16 = 1,050.68/x
  3. Step 3: Cross multiply
    1,186.76x = 1,778.16 × 1,050.68
  4. Step 4: Simplify right side
    1,186.76x = 1,868,277.15
  5. Step 5: Solve for x
    x = 1,868,277.15/1,186.76
  6. Step 6: Final answer
    x = 1,574.27

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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.