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Finding the Fourth Proportional to 213.44, 320.14 and 59.38

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Solution

The fourth proportional to 213.44, 320.14 and 59.38 is: 89.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.44 : 320.14 = 59.38 : x
  2. Step 2: Convert to fraction form
    213.44/320.14 = 59.38/x
  3. Step 3: Cross multiply
    213.44x = 320.14 × 59.38
  4. Step 4: Simplify right side
    213.44x = 19,009.91
  5. Step 5: Solve for x
    x = 19,009.91/213.44
  6. Step 6: Final answer
    x = 89.06

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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.