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Finding the Fourth Proportional to 512.27, 706.94 and 302.45

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Solution

The fourth proportional to 512.27, 706.94 and 302.45 is: 417.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.27 : 706.94 = 302.45 : x
  2. Step 2: Convert to fraction form
    512.27/706.94 = 302.45/x
  3. Step 3: Cross multiply
    512.27x = 706.94 × 302.45
  4. Step 4: Simplify right side
    512.27x = 213,814.07
  5. Step 5: Solve for x
    x = 213,814.07/512.27
  6. Step 6: Final answer
    x = 417.38

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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.