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Finding the Fourth Proportional to 852.53, 1,278.59 and 365.31

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Solution

The fourth proportional to 852.53, 1,278.59 and 365.31 is: 547.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.53 : 1,278.59 = 365.31 : x
  2. Step 2: Convert to fraction form
    852.53/1,278.59 = 365.31/x
  3. Step 3: Cross multiply
    852.53x = 1,278.59 × 365.31
  4. Step 4: Simplify right side
    852.53x = 467,079.89
  5. Step 5: Solve for x
    x = 467,079.89/852.53
  6. Step 6: Final answer
    x = 547.88

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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.