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Finding the Fourth Proportional to 474.45, 654.82 and 275.41

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Solution

The fourth proportional to 474.45, 654.82 and 275.41 is: 380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.45 : 654.82 = 275.41 : x
  2. Step 2: Convert to fraction form
    474.45/654.82 = 275.41/x
  3. Step 3: Cross multiply
    474.45x = 654.82 × 275.41
  4. Step 4: Simplify right side
    474.45x = 180,341.46
  5. Step 5: Solve for x
    x = 180,341.46/474.45
  6. Step 6: Final answer
    x = 380.11

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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.