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Finding the Fourth Proportional to 673.44, 935.92 and 665.60

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Solution

The fourth proportional to 673.44, 935.92 and 665.60 is: 925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.44 : 935.92 = 665.60 : x
  2. Step 2: Convert to fraction form
    673.44/935.92 = 665.60/x
  3. Step 3: Cross multiply
    673.44x = 935.92 × 665.60
  4. Step 4: Simplify right side
    673.44x = 622,948.35
  5. Step 5: Solve for x
    x = 622,948.35/673.44
  6. Step 6: Final answer
    x = 925.02

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.