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Finding the Fourth Proportional to 265.37, 366.15 and 154.86

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Solution

The fourth proportional to 265.37, 366.15 and 154.86 is: 213.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.37 : 366.15 = 154.86 : x
  2. Step 2: Convert to fraction form
    265.37/366.15 = 154.86/x
  3. Step 3: Cross multiply
    265.37x = 366.15 × 154.86
  4. Step 4: Simplify right side
    265.37x = 56,703.94
  5. Step 5: Solve for x
    x = 56,703.94/265.37
  6. Step 6: Final answer
    x = 213.68

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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.