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Finding the Fourth Proportional to 673.90, 935.03 and 654.75

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Solution

The fourth proportional to 673.90, 935.03 and 654.75 is: 908.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.90 : 935.03 = 654.75 : x
  2. Step 2: Convert to fraction form
    673.90/935.03 = 654.75/x
  3. Step 3: Cross multiply
    673.90x = 935.03 × 654.75
  4. Step 4: Simplify right side
    673.90x = 612,212.53
  5. Step 5: Solve for x
    x = 612,212.53/673.90
  6. Step 6: Final answer
    x = 908.47

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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.