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Finding the Fourth Proportional to 1,081.55, 1,622.39 and 341.27

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Solution

The fourth proportional to 1,081.55, 1,622.39 and 341.27 is: 511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.55 : 1,622.39 = 341.27 : x
  2. Step 2: Convert to fraction form
    1,081.55/1,622.39 = 341.27/x
  3. Step 3: Cross multiply
    1,081.55x = 1,622.39 × 341.27
  4. Step 4: Simplify right side
    1,081.55x = 553,663.22
  5. Step 5: Solve for x
    x = 553,663.22/1,081.55
  6. Step 6: Final answer
    x = 511.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.