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Finding the Fourth Proportional to 538.90, 808.56 and 192.22

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Solution

The fourth proportional to 538.90, 808.56 and 192.22 is: 288.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.90 : 808.56 = 192.22 : x
  2. Step 2: Convert to fraction form
    538.90/808.56 = 192.22/x
  3. Step 3: Cross multiply
    538.90x = 808.56 × 192.22
  4. Step 4: Simplify right side
    538.90x = 155,423.39
  5. Step 5: Solve for x
    x = 155,423.39/538.90
  6. Step 6: Final answer
    x = 288.41

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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.