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Finding the Fourth Proportional to 220.15, 304.47 and 192.47

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Solution

The fourth proportional to 220.15, 304.47 and 192.47 is: 266.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.15 : 304.47 = 192.47 : x
  2. Step 2: Convert to fraction form
    220.15/304.47 = 192.47/x
  3. Step 3: Cross multiply
    220.15x = 304.47 × 192.47
  4. Step 4: Simplify right side
    220.15x = 58,602.55
  5. Step 5: Solve for x
    x = 58,602.55/220.15
  6. Step 6: Final answer
    x = 266.19

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.