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Finding the Fourth Proportional to 499.95, 685.03 and 492.66

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Solution

The fourth proportional to 499.95, 685.03 and 492.66 is: 675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.95 : 685.03 = 492.66 : x
  2. Step 2: Convert to fraction form
    499.95/685.03 = 492.66/x
  3. Step 3: Cross multiply
    499.95x = 685.03 × 492.66
  4. Step 4: Simplify right side
    499.95x = 337,486.88
  5. Step 5: Solve for x
    x = 337,486.88/499.95
  6. Step 6: Final answer
    x = 675.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.