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Finding the Fourth Proportional to 922.56, 1,273.56 and 712.26

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Solution

The fourth proportional to 922.56, 1,273.56 and 712.26 is: 983.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.56 : 1,273.56 = 712.26 : x
  2. Step 2: Convert to fraction form
    922.56/1,273.56 = 712.26/x
  3. Step 3: Cross multiply
    922.56x = 1,273.56 × 712.26
  4. Step 4: Simplify right side
    922.56x = 907,105.85
  5. Step 5: Solve for x
    x = 907,105.85/922.56
  6. Step 6: Final answer
    x = 983.25

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1.5x scale

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.