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Finding the Fourth Proportional to 853.27, 1,278.88 and 365.29

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Solution

The fourth proportional to 853.27, 1,278.88 and 365.29 is: 547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.27 : 1,278.88 = 365.29 : x
  2. Step 2: Convert to fraction form
    853.27/1,278.88 = 365.29/x
  3. Step 3: Cross multiply
    853.27x = 1,278.88 × 365.29
  4. Step 4: Simplify right side
    853.27x = 467,162.08
  5. Step 5: Solve for x
    x = 467,162.08/853.27
  6. Step 6: Final answer
    x = 547.50

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Double scale
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1.5x scale

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.