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Finding the Fourth Proportional to 437.92, 658.50 and 403.90

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Solution

The fourth proportional to 437.92, 658.50 and 403.90 is: 607.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.92 : 658.50 = 403.90 : x
  2. Step 2: Convert to fraction form
    437.92/658.50 = 403.90/x
  3. Step 3: Cross multiply
    437.92x = 658.50 × 403.90
  4. Step 4: Simplify right side
    437.92x = 265,968.15
  5. Step 5: Solve for x
    x = 265,968.15/437.92
  6. Step 6: Final answer
    x = 607.34

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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.