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Finding the Fourth Proportional to 438.89, 658.62 and 348.03

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Solution

The fourth proportional to 438.89, 658.62 and 348.03 is: 522.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.89 : 658.62 = 348.03 : x
  2. Step 2: Convert to fraction form
    438.89/658.62 = 348.03/x
  3. Step 3: Cross multiply
    438.89x = 658.62 × 348.03
  4. Step 4: Simplify right side
    438.89x = 229,219.52
  5. Step 5: Solve for x
    x = 229,219.52/438.89
  6. Step 6: Final answer
    x = 522.28

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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.