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Finding the Fourth Proportional to 1,151.31, 1,727.44 and 603.85

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Solution

The fourth proportional to 1,151.31, 1,727.44 and 603.85 is: 906.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.31 : 1,727.44 = 603.85 : x
  2. Step 2: Convert to fraction form
    1,151.31/1,727.44 = 603.85/x
  3. Step 3: Cross multiply
    1,151.31x = 1,727.44 × 603.85
  4. Step 4: Simplify right side
    1,151.31x = 1,043,111.62
  5. Step 5: Solve for x
    x = 1,043,111.62/1,151.31
  6. Step 6: Final answer
    x = 906.02

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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.