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Finding the Fourth Proportional to 285.60, 426 and 265.44

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Solution

The fourth proportional to 285.60, 426 and 265.44 is: 395.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.60 : 426 = 265.44 : x
  2. Step 2: Convert to fraction form
    285.60/426 = 265.44/x
  3. Step 3: Cross multiply
    285.60x = 426 × 265.44
  4. Step 4: Simplify right side
    285.60x = 113,077.44
  5. Step 5: Solve for x
    x = 113,077.44/285.60
  6. Step 6: Final answer
    x = 395.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.