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Finding the Fourth Proportional to 338.10, 466.70 and 213.93

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Solution

The fourth proportional to 338.10, 466.70 and 213.93 is: 295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.10 : 466.70 = 213.93 : x
  2. Step 2: Convert to fraction form
    338.10/466.70 = 213.93/x
  3. Step 3: Cross multiply
    338.10x = 466.70 × 213.93
  4. Step 4: Simplify right side
    338.10x = 99,840.06
  5. Step 5: Solve for x
    x = 99,840.06/338.10
  6. Step 6: Final answer
    x = 295.30

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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.