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Finding the Fourth Proportional to 682.29, 935.46 and 669.96

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Solution

The fourth proportional to 682.29, 935.46 and 669.96 is: 918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.29 : 935.46 = 669.96 : x
  2. Step 2: Convert to fraction form
    682.29/935.46 = 669.96/x
  3. Step 3: Cross multiply
    682.29x = 935.46 × 669.96
  4. Step 4: Simplify right side
    682.29x = 626,720.78
  5. Step 5: Solve for x
    x = 626,720.78/682.29
  6. Step 6: Final answer
    x = 918.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.