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Finding the Fourth Proportional to 513.17, 708.17 and 303.38

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Solution

The fourth proportional to 513.17, 708.17 and 303.38 is: 418.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.17 : 708.17 = 303.38 : x
  2. Step 2: Convert to fraction form
    513.17/708.17 = 303.38/x
  3. Step 3: Cross multiply
    513.17x = 708.17 × 303.38
  4. Step 4: Simplify right side
    513.17x = 214,839.56
  5. Step 5: Solve for x
    x = 214,839.56/513.17
  6. Step 6: Final answer
    x = 418.66

Related Problems

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Double scale
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Similar ratio
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1.5x scale

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.