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Finding the Fourth Proportional to 658.37, 988.08 and 268.60

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Solution

The fourth proportional to 658.37, 988.08 and 268.60 is: 403.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.37 : 988.08 = 268.60 : x
  2. Step 2: Convert to fraction form
    658.37/988.08 = 268.60/x
  3. Step 3: Cross multiply
    658.37x = 988.08 × 268.60
  4. Step 4: Simplify right side
    658.37x = 265,398.29
  5. Step 5: Solve for x
    x = 265,398.29/658.37
  6. Step 6: Final answer
    x = 403.11

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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.