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Finding the Fourth Proportional to 474.08, 654.12 and 287.53

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Solution

The fourth proportional to 474.08, 654.12 and 287.53 is: 396.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.08 : 654.12 = 287.53 : x
  2. Step 2: Convert to fraction form
    474.08/654.12 = 287.53/x
  3. Step 3: Cross multiply
    474.08x = 654.12 × 287.53
  4. Step 4: Simplify right side
    474.08x = 188,077.49
  5. Step 5: Solve for x
    x = 188,077.49/474.08
  6. Step 6: Final answer
    x = 396.73

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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.