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Finding the Fourth Proportional to 512.52, 707.28 and 299.96

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Solution

The fourth proportional to 512.52, 707.28 and 299.96 is: 413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.52 : 707.28 = 299.96 : x
  2. Step 2: Convert to fraction form
    512.52/707.28 = 299.96/x
  3. Step 3: Cross multiply
    512.52x = 707.28 × 299.96
  4. Step 4: Simplify right side
    512.52x = 212,155.71
  5. Step 5: Solve for x
    x = 212,155.71/512.52
  6. Step 6: Final answer
    x = 413.95

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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.