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Finding the Fourth Proportional to 695.22, 958.88 and 473.78

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Solution

The fourth proportional to 695.22, 958.88 and 473.78 is: 653.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.22 : 958.88 = 473.78 : x
  2. Step 2: Convert to fraction form
    695.22/958.88 = 473.78/x
  3. Step 3: Cross multiply
    695.22x = 958.88 × 473.78
  4. Step 4: Simplify right side
    695.22x = 454,298.17
  5. Step 5: Solve for x
    x = 454,298.17/695.22
  6. Step 6: Final answer
    x = 653.46

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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.