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Finding the Fourth Proportional to 695.07, 959.11 and 400.38

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Solution

The fourth proportional to 695.07, 959.11 and 400.38 is: 552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.07 : 959.11 = 400.38 : x
  2. Step 2: Convert to fraction form
    695.07/959.11 = 400.38/x
  3. Step 3: Cross multiply
    695.07x = 959.11 × 400.38
  4. Step 4: Simplify right side
    695.07x = 384,008.46
  5. Step 5: Solve for x
    x = 384,008.46/695.07
  6. Step 6: Final answer
    x = 552.47

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1.5x scale

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.