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Finding the Fourth Proportional to 1,096.68, 1,643.95 and 365.85

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Solution

The fourth proportional to 1,096.68, 1,643.95 and 365.85 is: 548.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,096.68 : 1,643.95 = 365.85 : x
  2. Step 2: Convert to fraction form
    1,096.68/1,643.95 = 365.85/x
  3. Step 3: Cross multiply
    1,096.68x = 1,643.95 × 365.85
  4. Step 4: Simplify right side
    1,096.68x = 601,439.11
  5. Step 5: Solve for x
    x = 601,439.11/1,096.68
  6. Step 6: Final answer
    x = 548.42

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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.