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Finding the Fourth Proportional to 504.46, 694.11 and 492.31

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Solution

The fourth proportional to 504.46, 694.11 and 492.31 is: 677.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.46 : 694.11 = 492.31 : x
  2. Step 2: Convert to fraction form
    504.46/694.11 = 492.31/x
  3. Step 3: Cross multiply
    504.46x = 694.11 × 492.31
  4. Step 4: Simplify right side
    504.46x = 341,720.01
  5. Step 5: Solve for x
    x = 341,720.01/504.46
  6. Step 6: Final answer
    x = 677.40

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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.