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Finding the Fourth Proportional to 517.11, 713.58 and 296.07

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Solution

The fourth proportional to 517.11, 713.58 and 296.07 is: 408.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.11 : 713.58 = 296.07 : x
  2. Step 2: Convert to fraction form
    517.11/713.58 = 296.07/x
  3. Step 3: Cross multiply
    517.11x = 713.58 × 296.07
  4. Step 4: Simplify right side
    517.11x = 211,269.63
  5. Step 5: Solve for x
    x = 211,269.63/517.11
  6. Step 6: Final answer
    x = 408.56

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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.