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Finding the Fourth Proportional to 695.63, 959.96 and 385.13

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Solution

The fourth proportional to 695.63, 959.96 and 385.13 is: 531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.63 : 959.96 = 385.13 : x
  2. Step 2: Convert to fraction form
    695.63/959.96 = 385.13/x
  3. Step 3: Cross multiply
    695.63x = 959.96 × 385.13
  4. Step 4: Simplify right side
    695.63x = 369,705.56
  5. Step 5: Solve for x
    x = 369,705.56/695.63
  6. Step 6: Final answer
    x = 531.47

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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.