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Finding the Fourth Proportional to 513.75, 709 and 292.74

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Solution

The fourth proportional to 513.75, 709 and 292.74 is: 404.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.75 : 709 = 292.74 : x
  2. Step 2: Convert to fraction form
    513.75/709 = 292.74/x
  3. Step 3: Cross multiply
    513.75x = 709 × 292.74
  4. Step 4: Simplify right side
    513.75x = 207,552.66
  5. Step 5: Solve for x
    x = 207,552.66/513.75
  6. Step 6: Final answer
    x = 404.00

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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.