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Finding the Fourth Proportional to 695.38, 1,034.88 and 669.46

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Solution

The fourth proportional to 695.38, 1,034.88 and 669.46 is: 996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.38 : 1,034.88 = 669.46 : x
  2. Step 2: Convert to fraction form
    695.38/1,034.88 = 669.46/x
  3. Step 3: Cross multiply
    695.38x = 1,034.88 × 669.46
  4. Step 4: Simplify right side
    695.38x = 692,810.76
  5. Step 5: Solve for x
    x = 692,810.76/695.38
  6. Step 6: Final answer
    x = 996.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.