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Finding the Fourth Proportional to 244.40, 365.30 and 172.40

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Solution

The fourth proportional to 244.40, 365.30 and 172.40 is: 257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.40 : 365.30 = 172.40 : x
  2. Step 2: Convert to fraction form
    244.40/365.30 = 172.40/x
  3. Step 3: Cross multiply
    244.40x = 365.30 × 172.40
  4. Step 4: Simplify right side
    244.40x = 62,977.72
  5. Step 5: Solve for x
    x = 62,977.72/244.40
  6. Step 6: Final answer
    x = 257.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.