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Finding the Fourth Proportional to 354.38, 531.53 and 110.93

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Solution

The fourth proportional to 354.38, 531.53 and 110.93 is: 166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.38 : 531.53 = 110.93 : x
  2. Step 2: Convert to fraction form
    354.38/531.53 = 110.93/x
  3. Step 3: Cross multiply
    354.38x = 531.53 × 110.93
  4. Step 4: Simplify right side
    354.38x = 58,962.07
  5. Step 5: Solve for x
    x = 58,962.07/354.38
  6. Step 6: Final answer
    x = 166.38

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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.