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Finding the Fourth Proportional to 492.24, 737.80 and 309.68

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Solution

The fourth proportional to 492.24, 737.80 and 309.68 is: 464.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.24 : 737.80 = 309.68 : x
  2. Step 2: Convert to fraction form
    492.24/737.80 = 309.68/x
  3. Step 3: Cross multiply
    492.24x = 737.80 × 309.68
  4. Step 4: Simplify right side
    492.24x = 228,481.90
  5. Step 5: Solve for x
    x = 228,481.90/492.24
  6. Step 6: Final answer
    x = 464.17

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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.