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Finding the Fourth Proportional to 492.89, 740.14 and 330.89

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Solution

The fourth proportional to 492.89, 740.14 and 330.89 is: 496.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.89 : 740.14 = 330.89 : x
  2. Step 2: Convert to fraction form
    492.89/740.14 = 330.89/x
  3. Step 3: Cross multiply
    492.89x = 740.14 × 330.89
  4. Step 4: Simplify right side
    492.89x = 244,900.40
  5. Step 5: Solve for x
    x = 244,900.40/492.89
  6. Step 6: Final answer
    x = 496.87

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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.