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Finding the Fourth Proportional to 514, 708.84 and 339.28

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Solution

The fourth proportional to 514, 708.84 and 339.28 is: 467.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    514 : 708.84 = 339.28 : x
  2. Step 2: Convert to fraction form
    514/708.84 = 339.28/x
  3. Step 3: Cross multiply
    514x = 708.84 × 339.28
  4. Step 4: Simplify right side
    514x = 240,495.24
  5. Step 5: Solve for x
    x = 240,495.24/514
  6. Step 6: Final answer
    x = 467.89

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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.