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Finding the Fourth Proportional to 265.32, 365.91 and 172.07

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Solution

The fourth proportional to 265.32, 365.91 and 172.07 is: 237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.32 : 365.91 = 172.07 : x
  2. Step 2: Convert to fraction form
    265.32/365.91 = 172.07/x
  3. Step 3: Cross multiply
    265.32x = 365.91 × 172.07
  4. Step 4: Simplify right side
    265.32x = 62,960.30
  5. Step 5: Solve for x
    x = 62,960.30/265.32
  6. Step 6: Final answer
    x = 237.30

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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.