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Finding the Fourth Proportional to 902.93, 1,245.38 and 654.66

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Solution

The fourth proportional to 902.93, 1,245.38 and 654.66 is: 902.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.93 : 1,245.38 = 654.66 : x
  2. Step 2: Convert to fraction form
    902.93/1,245.38 = 654.66/x
  3. Step 3: Cross multiply
    902.93x = 1,245.38 × 654.66
  4. Step 4: Simplify right side
    902.93x = 815,297.20
  5. Step 5: Solve for x
    x = 815,297.20/902.93
  6. Step 6: Final answer
    x = 902.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.