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Finding the Fourth Proportional to 658.98, 988.56 and 334.80

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Solution

The fourth proportional to 658.98, 988.56 and 334.80 is: 502.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.98 : 988.56 = 334.80 : x
  2. Step 2: Convert to fraction form
    658.98/988.56 = 334.80/x
  3. Step 3: Cross multiply
    658.98x = 988.56 × 334.80
  4. Step 4: Simplify right side
    658.98x = 330,969.89
  5. Step 5: Solve for x
    x = 330,969.89/658.98
  6. Step 6: Final answer
    x = 502.25

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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.