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Finding the Fourth Proportional to 682.22, 935.34 and 669.93

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Solution

The fourth proportional to 682.22, 935.34 and 669.93 is: 918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.22 : 935.34 = 669.93 : x
  2. Step 2: Convert to fraction form
    682.22/935.34 = 669.93/x
  3. Step 3: Cross multiply
    682.22x = 935.34 × 669.93
  4. Step 4: Simplify right side
    682.22x = 626,606.31
  5. Step 5: Solve for x
    x = 626,606.31/682.22
  6. Step 6: Final answer
    x = 918.48

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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.