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Finding the Fourth Proportional to 474.38, 654.74 and 275.34

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Solution

The fourth proportional to 474.38, 654.74 and 275.34 is: 380.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.38 : 654.74 = 275.34 : x
  2. Step 2: Convert to fraction form
    474.38/654.74 = 275.34/x
  3. Step 3: Cross multiply
    474.38x = 654.74 × 275.34
  4. Step 4: Simplify right side
    474.38x = 180,276.11
  5. Step 5: Solve for x
    x = 180,276.11/474.38
  6. Step 6: Final answer
    x = 380.02

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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.