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Finding the Fourth Proportional to 493.60, 740.86 and 250.30

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Solution

The fourth proportional to 493.60, 740.86 and 250.30 is: 375.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.60 : 740.86 = 250.30 : x
  2. Step 2: Convert to fraction form
    493.60/740.86 = 250.30/x
  3. Step 3: Cross multiply
    493.60x = 740.86 × 250.30
  4. Step 4: Simplify right side
    493.60x = 185,436.19
  5. Step 5: Solve for x
    x = 185,436.19/493.60
  6. Step 6: Final answer
    x = 375.68

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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.