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Finding the Fourth Proportional to 513.03, 708 and 291.97

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Solution

The fourth proportional to 513.03, 708 and 291.97 is: 402.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.03 : 708 = 291.97 : x
  2. Step 2: Convert to fraction form
    513.03/708 = 291.97/x
  3. Step 3: Cross multiply
    513.03x = 708 × 291.97
  4. Step 4: Simplify right side
    513.03x = 206,714.76
  5. Step 5: Solve for x
    x = 206,714.76/513.03
  6. Step 6: Final answer
    x = 402.93

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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.