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Finding the Fourth Proportional to 848.57, 1,171.82 and 554.54

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Solution

The fourth proportional to 848.57, 1,171.82 and 554.54 is: 765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.57 : 1,171.82 = 554.54 : x
  2. Step 2: Convert to fraction form
    848.57/1,171.82 = 554.54/x
  3. Step 3: Cross multiply
    848.57x = 1,171.82 × 554.54
  4. Step 4: Simplify right side
    848.57x = 649,812.43
  5. Step 5: Solve for x
    x = 649,812.43/848.57
  6. Step 6: Final answer
    x = 765.78

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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.