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Finding the Fourth Proportional to 474.56, 654.60 and 299.60

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Solution

The fourth proportional to 474.56, 654.60 and 299.60 is: 413.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.56 : 654.60 = 299.60 : x
  2. Step 2: Convert to fraction form
    474.56/654.60 = 299.60/x
  3. Step 3: Cross multiply
    474.56x = 654.60 × 299.60
  4. Step 4: Simplify right side
    474.56x = 196,118.16
  5. Step 5: Solve for x
    x = 196,118.16/474.56
  6. Step 6: Final answer
    x = 413.26

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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.