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Finding the Fourth Proportional to 285.03, 429.26 and 239.67

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Solution

The fourth proportional to 285.03, 429.26 and 239.67 is: 360.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.03 : 429.26 = 239.67 : x
  2. Step 2: Convert to fraction form
    285.03/429.26 = 239.67/x
  3. Step 3: Cross multiply
    285.03x = 429.26 × 239.67
  4. Step 4: Simplify right side
    285.03x = 102,879.55
  5. Step 5: Solve for x
    x = 102,879.55/285.03
  6. Step 6: Final answer
    x = 360.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.