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Finding the Fourth Proportional to 1,190.17, 1,785.48 and 605.50

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Solution

The fourth proportional to 1,190.17, 1,785.48 and 605.50 is: 908.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.17 : 1,785.48 = 605.50 : x
  2. Step 2: Convert to fraction form
    1,190.17/1,785.48 = 605.50/x
  3. Step 3: Cross multiply
    1,190.17x = 1,785.48 × 605.50
  4. Step 4: Simplify right side
    1,190.17x = 1,081,108.14
  5. Step 5: Solve for x
    x = 1,081,108.14/1,190.17
  6. Step 6: Final answer
    x = 908.36

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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.