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Finding the Fourth Proportional to 233.78, 349.80 and 156.93

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Solution

The fourth proportional to 233.78, 349.80 and 156.93 is: 234.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.78 : 349.80 = 156.93 : x
  2. Step 2: Convert to fraction form
    233.78/349.80 = 156.93/x
  3. Step 3: Cross multiply
    233.78x = 349.80 × 156.93
  4. Step 4: Simplify right side
    233.78x = 54,894.11
  5. Step 5: Solve for x
    x = 54,894.11/233.78
  6. Step 6: Final answer
    x = 234.81

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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.