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Finding the Fourth Proportional to 1,194.20, 1,647.97 and 670.22

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Solution

The fourth proportional to 1,194.20, 1,647.97 and 670.22 is: 924.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.20 : 1,647.97 = 670.22 : x
  2. Step 2: Convert to fraction form
    1,194.20/1,647.97 = 670.22/x
  3. Step 3: Cross multiply
    1,194.20x = 1,647.97 × 670.22
  4. Step 4: Simplify right side
    1,194.20x = 1,104,502.45
  5. Step 5: Solve for x
    x = 1,104,502.45/1,194.20
  6. Step 6: Final answer
    x = 924.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.