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Finding the Fourth Proportional to 1,182.84, 1,631.58 and 850.74

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Solution

The fourth proportional to 1,182.84, 1,631.58 and 850.74 is: 1,173.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.84 : 1,631.58 = 850.74 : x
  2. Step 2: Convert to fraction form
    1,182.84/1,631.58 = 850.74/x
  3. Step 3: Cross multiply
    1,182.84x = 1,631.58 × 850.74
  4. Step 4: Simplify right side
    1,182.84x = 1,388,050.37
  5. Step 5: Solve for x
    x = 1,388,050.37/1,182.84
  6. Step 6: Final answer
    x = 1,173.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.