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Finding the Fourth Proportional to 848.50, 1,272.84 and 263.48

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Solution

The fourth proportional to 848.50, 1,272.84 and 263.48 is: 395.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.50 : 1,272.84 = 263.48 : x
  2. Step 2: Convert to fraction form
    848.50/1,272.84 = 263.48/x
  3. Step 3: Cross multiply
    848.50x = 1,272.84 × 263.48
  4. Step 4: Simplify right side
    848.50x = 335,365.30
  5. Step 5: Solve for x
    x = 335,365.30/848.50
  6. Step 6: Final answer
    x = 395.24

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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.