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Finding the Fourth Proportional to 695.09, 958.56 and 518.47

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Solution

The fourth proportional to 695.09, 958.56 and 518.47 is: 715.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.09 : 958.56 = 518.47 : x
  2. Step 2: Convert to fraction form
    695.09/958.56 = 518.47/x
  3. Step 3: Cross multiply
    695.09x = 958.56 × 518.47
  4. Step 4: Simplify right side
    695.09x = 496,985.80
  5. Step 5: Solve for x
    x = 496,985.80/695.09
  6. Step 6: Final answer
    x = 715.00

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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.