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Finding the Fourth Proportional to 1,200.09, 1,655.54 and 1,034.02

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Solution

The fourth proportional to 1,200.09, 1,655.54 and 1,034.02 is: 1,426.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.09 : 1,655.54 = 1,034.02 : x
  2. Step 2: Convert to fraction form
    1,200.09/1,655.54 = 1,034.02/x
  3. Step 3: Cross multiply
    1,200.09x = 1,655.54 × 1,034.02
  4. Step 4: Simplify right side
    1,200.09x = 1,711,861.47
  5. Step 5: Solve for x
    x = 1,711,861.47/1,200.09
  6. Step 6: Final answer
    x = 1,426.44

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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.