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Finding the Fourth Proportional to 585.58, 806.25 and 515.59

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Solution

The fourth proportional to 585.58, 806.25 and 515.59 is: 709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.58 : 806.25 = 515.59 : x
  2. Step 2: Convert to fraction form
    585.58/806.25 = 515.59/x
  3. Step 3: Cross multiply
    585.58x = 806.25 × 515.59
  4. Step 4: Simplify right side
    585.58x = 415,694.44
  5. Step 5: Solve for x
    x = 415,694.44/585.58
  6. Step 6: Final answer
    x = 709.88

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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.