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Finding the Fourth Proportional to 695.43, 957.56 and 630.63

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Solution

The fourth proportional to 695.43, 957.56 and 630.63 is: 868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.43 : 957.56 = 630.63 : x
  2. Step 2: Convert to fraction form
    695.43/957.56 = 630.63/x
  3. Step 3: Cross multiply
    695.43x = 957.56 × 630.63
  4. Step 4: Simplify right side
    695.43x = 603,862.91
  5. Step 5: Solve for x
    x = 603,862.91/695.43
  6. Step 6: Final answer
    x = 868.33

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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.