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Finding the Fourth Proportional to 474.93, 712.02 and 218.25

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Solution

The fourth proportional to 474.93, 712.02 and 218.25 is: 327.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.93 : 712.02 = 218.25 : x
  2. Step 2: Convert to fraction form
    474.93/712.02 = 218.25/x
  3. Step 3: Cross multiply
    474.93x = 712.02 × 218.25
  4. Step 4: Simplify right side
    474.93x = 155,398.37
  5. Step 5: Solve for x
    x = 155,398.37/474.93
  6. Step 6: Final answer
    x = 327.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.