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Finding the Fourth Proportional to 848.76, 1,273.20 and 300.96

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Solution

The fourth proportional to 848.76, 1,273.20 and 300.96 is: 451.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.76 : 1,273.20 = 300.96 : x
  2. Step 2: Convert to fraction form
    848.76/1,273.20 = 300.96/x
  3. Step 3: Cross multiply
    848.76x = 1,273.20 × 300.96
  4. Step 4: Simplify right side
    848.76x = 383,182.27
  5. Step 5: Solve for x
    x = 383,182.27/848.76
  6. Step 6: Final answer
    x = 451.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.