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Finding the Fourth Proportional to 262.72, 362.91 and 260.90

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Solution

The fourth proportional to 262.72, 362.91 and 260.90 is: 360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.72 : 362.91 = 260.90 : x
  2. Step 2: Convert to fraction form
    262.72/362.91 = 260.90/x
  3. Step 3: Cross multiply
    262.72x = 362.91 × 260.90
  4. Step 4: Simplify right side
    262.72x = 94,683.22
  5. Step 5: Solve for x
    x = 94,683.22/262.72
  6. Step 6: Final answer
    x = 360.40

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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.