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Finding the Fourth Proportional to 513.07, 708.03 and 303.25

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Solution

The fourth proportional to 513.07, 708.03 and 303.25 is: 418.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.07 : 708.03 = 303.25 : x
  2. Step 2: Convert to fraction form
    513.07/708.03 = 303.25/x
  3. Step 3: Cross multiply
    513.07x = 708.03 × 303.25
  4. Step 4: Simplify right side
    513.07x = 214,710.10
  5. Step 5: Solve for x
    x = 214,710.10/513.07
  6. Step 6: Final answer
    x = 418.48

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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.