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Finding the Fourth Proportional to 229.83, 317.22 and 192.90

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Solution

The fourth proportional to 229.83, 317.22 and 192.90 is: 266.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.83 : 317.22 = 192.90 : x
  2. Step 2: Convert to fraction form
    229.83/317.22 = 192.90/x
  3. Step 3: Cross multiply
    229.83x = 317.22 × 192.90
  4. Step 4: Simplify right side
    229.83x = 61,191.74
  5. Step 5: Solve for x
    x = 61,191.74/229.83
  6. Step 6: Final answer
    x = 266.25

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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.