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Finding the Fourth Proportional to 233.20, 321.74 and 134.93

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Solution

The fourth proportional to 233.20, 321.74 and 134.93 is: 186.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.20 : 321.74 = 134.93 : x
  2. Step 2: Convert to fraction form
    233.20/321.74 = 134.93/x
  3. Step 3: Cross multiply
    233.20x = 321.74 × 134.93
  4. Step 4: Simplify right side
    233.20x = 43,412.51
  5. Step 5: Solve for x
    x = 43,412.51/233.20
  6. Step 6: Final answer
    x = 186.16

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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.