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Finding the Fourth Proportional to 1,227.48, 1,693.97 and 703.62

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Solution

The fourth proportional to 1,227.48, 1,693.97 and 703.62 is: 971.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.48 : 1,693.97 = 703.62 : x
  2. Step 2: Convert to fraction form
    1,227.48/1,693.97 = 703.62/x
  3. Step 3: Cross multiply
    1,227.48x = 1,693.97 × 703.62
  4. Step 4: Simplify right side
    1,227.48x = 1,191,902.70
  5. Step 5: Solve for x
    x = 1,191,902.70/1,227.48
  6. Step 6: Final answer
    x = 971.02

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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.