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Finding the Fourth Proportional to 695.08, 959.20 and 380.36

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Solution

The fourth proportional to 695.08, 959.20 and 380.36 is: 524.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.08 : 959.20 = 380.36 : x
  2. Step 2: Convert to fraction form
    695.08/959.20 = 380.36/x
  3. Step 3: Cross multiply
    695.08x = 959.20 × 380.36
  4. Step 4: Simplify right side
    695.08x = 364,841.31
  5. Step 5: Solve for x
    x = 364,841.31/695.08
  6. Step 6: Final answer
    x = 524.89

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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.