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Finding the Fourth Proportional to 492.11, 737.31 and 345.58

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Solution

The fourth proportional to 492.11, 737.31 and 345.58 is: 517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.11 : 737.31 = 345.58 : x
  2. Step 2: Convert to fraction form
    492.11/737.31 = 345.58/x
  3. Step 3: Cross multiply
    492.11x = 737.31 × 345.58
  4. Step 4: Simplify right side
    492.11x = 254,803.19
  5. Step 5: Solve for x
    x = 254,803.19/492.11
  6. Step 6: Final answer
    x = 517.78

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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.