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Finding the Fourth Proportional to 464.89, 697.39 and 218.35

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Solution

The fourth proportional to 464.89, 697.39 and 218.35 is: 327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.89 : 697.39 = 218.35 : x
  2. Step 2: Convert to fraction form
    464.89/697.39 = 218.35/x
  3. Step 3: Cross multiply
    464.89x = 697.39 × 218.35
  4. Step 4: Simplify right side
    464.89x = 152,272.74
  5. Step 5: Solve for x
    x = 152,272.74/464.89
  6. Step 6: Final answer
    x = 327.55

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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.