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Finding the Fourth Proportional to 265.34, 366.21 and 154.83

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Solution

The fourth proportional to 265.34, 366.21 and 154.83 is: 213.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.34 : 366.21 = 154.83 : x
  2. Step 2: Convert to fraction form
    265.34/366.21 = 154.83/x
  3. Step 3: Cross multiply
    265.34x = 366.21 × 154.83
  4. Step 4: Simplify right side
    265.34x = 56,700.29
  5. Step 5: Solve for x
    x = 56,700.29/265.34
  6. Step 6: Final answer
    x = 213.69

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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.