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Finding the Fourth Proportional to 265.40, 366.18 and 172.11

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Solution

The fourth proportional to 265.40, 366.18 and 172.11 is: 237.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.40 : 366.18 = 172.11 : x
  2. Step 2: Convert to fraction form
    265.40/366.18 = 172.11/x
  3. Step 3: Cross multiply
    265.40x = 366.18 × 172.11
  4. Step 4: Simplify right side
    265.40x = 63,023.24
  5. Step 5: Solve for x
    x = 63,023.24/265.40
  6. Step 6: Final answer
    x = 237.47

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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.