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Finding the Fourth Proportional to 848.44, 1,171.54 and 553.56

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Solution

The fourth proportional to 848.44, 1,171.54 and 553.56 is: 764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.44 : 1,171.54 = 553.56 : x
  2. Step 2: Convert to fraction form
    848.44/1,171.54 = 553.56/x
  3. Step 3: Cross multiply
    848.44x = 1,171.54 × 553.56
  4. Step 4: Simplify right side
    848.44x = 648,517.68
  5. Step 5: Solve for x
    x = 648,517.68/848.44
  6. Step 6: Final answer
    x = 764.36

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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.