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Finding the Fourth Proportional to 1,227.22, 1,693.58 and 703.25

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Solution

The fourth proportional to 1,227.22, 1,693.58 and 703.25 is: 970.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.22 : 1,693.58 = 703.25 : x
  2. Step 2: Convert to fraction form
    1,227.22/1,693.58 = 703.25/x
  3. Step 3: Cross multiply
    1,227.22x = 1,693.58 × 703.25
  4. Step 4: Simplify right side
    1,227.22x = 1,191,010.14
  5. Step 5: Solve for x
    x = 1,191,010.14/1,227.22
  6. Step 6: Final answer
    x = 970.49

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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.