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Finding the Fourth Proportional to 284.72, 393.54 and 262.85

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Solution

The fourth proportional to 284.72, 393.54 and 262.85 is: 363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.72 : 393.54 = 262.85 : x
  2. Step 2: Convert to fraction form
    284.72/393.54 = 262.85/x
  3. Step 3: Cross multiply
    284.72x = 393.54 × 262.85
  4. Step 4: Simplify right side
    284.72x = 103,441.99
  5. Step 5: Solve for x
    x = 103,441.99/284.72
  6. Step 6: Final answer
    x = 363.31

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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.