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Finding the Fourth Proportional to 262.63, 362.94 and 215.93

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Solution

The fourth proportional to 262.63, 362.94 and 215.93 is: 298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.63 : 362.94 = 215.93 : x
  2. Step 2: Convert to fraction form
    262.63/362.94 = 215.93/x
  3. Step 3: Cross multiply
    262.63x = 362.94 × 215.93
  4. Step 4: Simplify right side
    262.63x = 78,369.63
  5. Step 5: Solve for x
    x = 78,369.63/262.63
  6. Step 6: Final answer
    x = 298.40

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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.