Home / 1,190.55-1,787.88-706.64

Finding the Fourth Proportional to 1,190.55, 1,787.88 and 706.64

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Solution

The fourth proportional to 1,190.55, 1,787.88 and 706.64 is: 1,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.55 : 1,787.88 = 706.64 : x
  2. Step 2: Convert to fraction form
    1,190.55/1,787.88 = 706.64/x
  3. Step 3: Cross multiply
    1,190.55x = 1,787.88 × 706.64
  4. Step 4: Simplify right side
    1,190.55x = 1,263,378.58
  5. Step 5: Solve for x
    x = 1,263,378.58/1,190.55
  6. Step 6: Final answer
    x = 1,061.17

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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.