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Finding the Fourth Proportional to 853.13, 1,278.61 and 467.93

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Solution

The fourth proportional to 853.13, 1,278.61 and 467.93 is: 701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.13 : 1,278.61 = 467.93 : x
  2. Step 2: Convert to fraction form
    853.13/1,278.61 = 467.93/x
  3. Step 3: Cross multiply
    853.13x = 1,278.61 × 467.93
  4. Step 4: Simplify right side
    853.13x = 598,299.98
  5. Step 5: Solve for x
    x = 598,299.98/853.13
  6. Step 6: Final answer
    x = 701.30

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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.