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Finding the Fourth Proportional to 223.06, 307.85 and 124.83

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Solution

The fourth proportional to 223.06, 307.85 and 124.83 is: 172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.06 : 307.85 = 124.83 : x
  2. Step 2: Convert to fraction form
    223.06/307.85 = 124.83/x
  3. Step 3: Cross multiply
    223.06x = 307.85 × 124.83
  4. Step 4: Simplify right side
    223.06x = 38,428.92
  5. Step 5: Solve for x
    x = 38,428.92/223.06
  6. Step 6: Final answer
    x = 172.28

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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.