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Finding the Fourth Proportional to 695.15, 959.27 and 380.42

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Solution

The fourth proportional to 695.15, 959.27 and 380.42 is: 524.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.15 : 959.27 = 380.42 : x
  2. Step 2: Convert to fraction form
    695.15/959.27 = 380.42/x
  3. Step 3: Cross multiply
    695.15x = 959.27 × 380.42
  4. Step 4: Simplify right side
    695.15x = 364,927.36
  5. Step 5: Solve for x
    x = 364,927.36/695.15
  6. Step 6: Final answer
    x = 524.96

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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.