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Finding the Fourth Proportional to 233.66, 322.47 and 135.42

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Solution

The fourth proportional to 233.66, 322.47 and 135.42 is: 186.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.66 : 322.47 = 135.42 : x
  2. Step 2: Convert to fraction form
    233.66/322.47 = 135.42/x
  3. Step 3: Cross multiply
    233.66x = 322.47 × 135.42
  4. Step 4: Simplify right side
    233.66x = 43,668.89
  5. Step 5: Solve for x
    x = 43,668.89/233.66
  6. Step 6: Final answer
    x = 186.89

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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.