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Finding the Fourth Proportional to 1,189.77, 1,784.47 and 604.52

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Solution

The fourth proportional to 1,189.77, 1,784.47 and 604.52 is: 906.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.77 : 1,784.47 = 604.52 : x
  2. Step 2: Convert to fraction form
    1,189.77/1,784.47 = 604.52/x
  3. Step 3: Cross multiply
    1,189.77x = 1,784.47 × 604.52
  4. Step 4: Simplify right side
    1,189.77x = 1,078,747.80
  5. Step 5: Solve for x
    x = 1,078,747.80/1,189.77
  6. Step 6: Final answer
    x = 906.69

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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.