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Finding the Fourth Proportional to 491.93, 737.74 and 218.25

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Solution

The fourth proportional to 491.93, 737.74 and 218.25 is: 327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.93 : 737.74 = 218.25 : x
  2. Step 2: Convert to fraction form
    491.93/737.74 = 218.25/x
  3. Step 3: Cross multiply
    491.93x = 737.74 × 218.25
  4. Step 4: Simplify right side
    491.93x = 161,010.66
  5. Step 5: Solve for x
    x = 161,010.66/491.93
  6. Step 6: Final answer
    x = 327.30

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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.