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Finding the Fourth Proportional to 695.06, 959.28 and 400.32

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Solution

The fourth proportional to 695.06, 959.28 and 400.32 is: 552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.06 : 959.28 = 400.32 : x
  2. Step 2: Convert to fraction form
    695.06/959.28 = 400.32/x
  3. Step 3: Cross multiply
    695.06x = 959.28 × 400.32
  4. Step 4: Simplify right side
    695.06x = 384,018.97
  5. Step 5: Solve for x
    x = 384,018.97/695.06
  6. Step 6: Final answer
    x = 552.50

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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.