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Finding the Fourth Proportional to 438.56, 658.12 and 246.32

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Solution

The fourth proportional to 438.56, 658.12 and 246.32 is: 369.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.56 : 658.12 = 246.32 : x
  2. Step 2: Convert to fraction form
    438.56/658.12 = 246.32/x
  3. Step 3: Cross multiply
    438.56x = 658.12 × 246.32
  4. Step 4: Simplify right side
    438.56x = 162,108.12
  5. Step 5: Solve for x
    x = 162,108.12/438.56
  6. Step 6: Final answer
    x = 369.64

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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.