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Finding the Fourth Proportional to 183.70, 253.10 and 172.36

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Solution

The fourth proportional to 183.70, 253.10 and 172.36 is: 237.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.70 : 253.10 = 172.36 : x
  2. Step 2: Convert to fraction form
    183.70/253.10 = 172.36/x
  3. Step 3: Cross multiply
    183.70x = 253.10 × 172.36
  4. Step 4: Simplify right side
    183.70x = 43,624.32
  5. Step 5: Solve for x
    x = 43,624.32/183.70
  6. Step 6: Final answer
    x = 237.48

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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.