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Finding the Fourth Proportional to 474.21, 654.44 and 277.70

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Solution

The fourth proportional to 474.21, 654.44 and 277.70 is: 383.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.21 : 654.44 = 277.70 : x
  2. Step 2: Convert to fraction form
    474.21/654.44 = 277.70/x
  3. Step 3: Cross multiply
    474.21x = 654.44 × 277.70
  4. Step 4: Simplify right side
    474.21x = 181,733.33
  5. Step 5: Solve for x
    x = 181,733.33/474.21
  6. Step 6: Final answer
    x = 383.23

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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.