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Finding the Fourth Proportional to 1,194.99, 1,793.22 and 647.53

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Solution

The fourth proportional to 1,194.99, 1,793.22 and 647.53 is: 971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.99 : 1,793.22 = 647.53 : x
  2. Step 2: Convert to fraction form
    1,194.99/1,793.22 = 647.53/x
  3. Step 3: Cross multiply
    1,194.99x = 1,793.22 × 647.53
  4. Step 4: Simplify right side
    1,194.99x = 1,161,163.75
  5. Step 5: Solve for x
    x = 1,161,163.75/1,194.99
  6. Step 6: Final answer
    x = 971.69

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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.