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Finding the Fourth Proportional to 262.60, 362.31 and 152.05

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Solution

The fourth proportional to 262.60, 362.31 and 152.05 is: 209.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.60 : 362.31 = 152.05 : x
  2. Step 2: Convert to fraction form
    262.60/362.31 = 152.05/x
  3. Step 3: Cross multiply
    262.60x = 362.31 × 152.05
  4. Step 4: Simplify right side
    262.60x = 55,089.24
  5. Step 5: Solve for x
    x = 55,089.24/262.60
  6. Step 6: Final answer
    x = 209.78

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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.