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Finding the Fourth Proportional to 505.08, 696.72 and 394.52

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Solution

The fourth proportional to 505.08, 696.72 and 394.52 is: 544.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.08 : 696.72 = 394.52 : x
  2. Step 2: Convert to fraction form
    505.08/696.72 = 394.52/x
  3. Step 3: Cross multiply
    505.08x = 696.72 × 394.52
  4. Step 4: Simplify right side
    505.08x = 274,869.97
  5. Step 5: Solve for x
    x = 274,869.97/505.08
  6. Step 6: Final answer
    x = 544.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.