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Finding the Fourth Proportional to 479.34, 718.17 and 235.38

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Solution

The fourth proportional to 479.34, 718.17 and 235.38 is: 352.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.34 : 718.17 = 235.38 : x
  2. Step 2: Convert to fraction form
    479.34/718.17 = 235.38/x
  3. Step 3: Cross multiply
    479.34x = 718.17 × 235.38
  4. Step 4: Simplify right side
    479.34x = 169,042.85
  5. Step 5: Solve for x
    x = 169,042.85/479.34
  6. Step 6: Final answer
    x = 352.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.