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Finding the Fourth Proportional to 694.31, 957.35 and 519.35

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Solution

The fourth proportional to 694.31, 957.35 and 519.35 is: 716.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.31 : 957.35 = 519.35 : x
  2. Step 2: Convert to fraction form
    694.31/957.35 = 519.35/x
  3. Step 3: Cross multiply
    694.31x = 957.35 × 519.35
  4. Step 4: Simplify right side
    694.31x = 497,196.23
  5. Step 5: Solve for x
    x = 497,196.23/694.31
  6. Step 6: Final answer
    x = 716.11

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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.