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Finding the Fourth Proportional to 513.68, 708.58 and 336.58

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Solution

The fourth proportional to 513.68, 708.58 and 336.58 is: 464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.68 : 708.58 = 336.58 : x
  2. Step 2: Convert to fraction form
    513.68/708.58 = 336.58/x
  3. Step 3: Cross multiply
    513.68x = 708.58 × 336.58
  4. Step 4: Simplify right side
    513.68x = 238,493.86
  5. Step 5: Solve for x
    x = 238,493.86/513.68
  6. Step 6: Final answer
    x = 464.28

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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.