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Finding the Fourth Proportional to 493.40, 740.19 and 146.73

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Solution

The fourth proportional to 493.40, 740.19 and 146.73 is: 220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.40 : 740.19 = 146.73 : x
  2. Step 2: Convert to fraction form
    493.40/740.19 = 146.73/x
  3. Step 3: Cross multiply
    493.40x = 740.19 × 146.73
  4. Step 4: Simplify right side
    493.40x = 108,611.40
  5. Step 5: Solve for x
    x = 108,611.40/493.40
  6. Step 6: Final answer
    x = 220.13

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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.