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Finding the Fourth Proportional to 848.67, 1,272.79 and 293.30

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Solution

The fourth proportional to 848.67, 1,272.79 and 293.30 is: 439.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.67 : 1,272.79 = 293.30 : x
  2. Step 2: Convert to fraction form
    848.67/1,272.79 = 293.30/x
  3. Step 3: Cross multiply
    848.67x = 1,272.79 × 293.30
  4. Step 4: Simplify right side
    848.67x = 373,309.31
  5. Step 5: Solve for x
    x = 373,309.31/848.67
  6. Step 6: Final answer
    x = 439.88

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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.