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Finding the Fourth Proportional to 658.95, 988.59 and 248.09

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Solution

The fourth proportional to 658.95, 988.59 and 248.09 is: 372.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.95 : 988.59 = 248.09 : x
  2. Step 2: Convert to fraction form
    658.95/988.59 = 248.09/x
  3. Step 3: Cross multiply
    658.95x = 988.59 × 248.09
  4. Step 4: Simplify right side
    658.95x = 245,254.35
  5. Step 5: Solve for x
    x = 245,254.35/658.95
  6. Step 6: Final answer
    x = 372.19

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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.