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Finding the Fourth Proportional to 284.22, 392.22 and 264.63

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Solution

The fourth proportional to 284.22, 392.22 and 264.63 is: 365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.22 : 392.22 = 264.63 : x
  2. Step 2: Convert to fraction form
    284.22/392.22 = 264.63/x
  3. Step 3: Cross multiply
    284.22x = 392.22 × 264.63
  4. Step 4: Simplify right side
    284.22x = 103,793.18
  5. Step 5: Solve for x
    x = 103,793.18/284.22
  6. Step 6: Final answer
    x = 365.19

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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.