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Finding the Fourth Proportional to 1,200.62, 1,655.71 and 827.01

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Solution

The fourth proportional to 1,200.62, 1,655.71 and 827.01 is: 1,140.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.62 : 1,655.71 = 827.01 : x
  2. Step 2: Convert to fraction form
    1,200.62/1,655.71 = 827.01/x
  3. Step 3: Cross multiply
    1,200.62x = 1,655.71 × 827.01
  4. Step 4: Simplify right side
    1,200.62x = 1,369,286.66
  5. Step 5: Solve for x
    x = 1,369,286.66/1,200.62
  6. Step 6: Final answer
    x = 1,140.48

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1.5x scale

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.