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Finding the Fourth Proportional to 507.96, 696.42 and 498.72

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Solution

The fourth proportional to 507.96, 696.42 and 498.72 is: 683.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.96 : 696.42 = 498.72 : x
  2. Step 2: Convert to fraction form
    507.96/696.42 = 498.72/x
  3. Step 3: Cross multiply
    507.96x = 696.42 × 498.72
  4. Step 4: Simplify right side
    507.96x = 347,318.58
  5. Step 5: Solve for x
    x = 347,318.58/507.96
  6. Step 6: Final answer
    x = 683.75

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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.