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Finding the Fourth Proportional to 499.86, 690.08 and 334.32

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Solution

The fourth proportional to 499.86, 690.08 and 334.32 is: 461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.86 : 690.08 = 334.32 : x
  2. Step 2: Convert to fraction form
    499.86/690.08 = 334.32/x
  3. Step 3: Cross multiply
    499.86x = 690.08 × 334.32
  4. Step 4: Simplify right side
    499.86x = 230,705.87
  5. Step 5: Solve for x
    x = 230,705.87/499.86
  6. Step 6: Final answer
    x = 461.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.