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Finding the Fourth Proportional to 213.16, 319.73 and 59.11

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Solution

The fourth proportional to 213.16, 319.73 and 59.11 is: 88.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.16 : 319.73 = 59.11 : x
  2. Step 2: Convert to fraction form
    213.16/319.73 = 59.11/x
  3. Step 3: Cross multiply
    213.16x = 319.73 × 59.11
  4. Step 4: Simplify right side
    213.16x = 18,899.24
  5. Step 5: Solve for x
    x = 18,899.24/213.16
  6. Step 6: Final answer
    x = 88.66

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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.