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Finding the Fourth Proportional to 265.18, 365.92 and 154.68

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Solution

The fourth proportional to 265.18, 365.92 and 154.68 is: 213.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.18 : 365.92 = 154.68 : x
  2. Step 2: Convert to fraction form
    265.18/365.92 = 154.68/x
  3. Step 3: Cross multiply
    265.18x = 365.92 × 154.68
  4. Step 4: Simplify right side
    265.18x = 56,600.51
  5. Step 5: Solve for x
    x = 56,600.51/265.18
  6. Step 6: Final answer
    x = 213.44

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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.