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Finding the Fourth Proportional to 357.31, 493.05 and 233.07

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Solution

The fourth proportional to 357.31, 493.05 and 233.07 is: 321.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.31 : 493.05 = 233.07 : x
  2. Step 2: Convert to fraction form
    357.31/493.05 = 233.07/x
  3. Step 3: Cross multiply
    357.31x = 493.05 × 233.07
  4. Step 4: Simplify right side
    357.31x = 114,915.16
  5. Step 5: Solve for x
    x = 114,915.16/357.31
  6. Step 6: Final answer
    x = 321.61

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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.