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Finding the Fourth Proportional to 210.30, 291.53 and 197.34

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Solution

The fourth proportional to 210.30, 291.53 and 197.34 is: 273.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.30 : 291.53 = 197.34 : x
  2. Step 2: Convert to fraction form
    210.30/291.53 = 197.34/x
  3. Step 3: Cross multiply
    210.30x = 291.53 × 197.34
  4. Step 4: Simplify right side
    210.30x = 57,529.54
  5. Step 5: Solve for x
    x = 57,529.54/210.30
  6. Step 6: Final answer
    x = 273.56

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.