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Finding the Fourth Proportional to 210.16, 313.07 and 196.87

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Solution

The fourth proportional to 210.16, 313.07 and 196.87 is: 293.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.16 : 313.07 = 196.87 : x
  2. Step 2: Convert to fraction form
    210.16/313.07 = 196.87/x
  3. Step 3: Cross multiply
    210.16x = 313.07 × 196.87
  4. Step 4: Simplify right side
    210.16x = 61,634.09
  5. Step 5: Solve for x
    x = 61,634.09/210.16
  6. Step 6: Final answer
    x = 293.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.