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Finding the Fourth Proportional to 424.34, 584.92 and 299.80

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Solution

The fourth proportional to 424.34, 584.92 and 299.80 is: 413.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.34 : 584.92 = 299.80 : x
  2. Step 2: Convert to fraction form
    424.34/584.92 = 299.80/x
  3. Step 3: Cross multiply
    424.34x = 584.92 × 299.80
  4. Step 4: Simplify right side
    424.34x = 175,360.12
  5. Step 5: Solve for x
    x = 175,360.12/424.34
  6. Step 6: Final answer
    x = 413.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.