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Finding the Fourth Proportional to 468.32, 646.27 and 261.32

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Solution

The fourth proportional to 468.32, 646.27 and 261.32 is: 360.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.32 : 646.27 = 261.32 : x
  2. Step 2: Convert to fraction form
    468.32/646.27 = 261.32/x
  3. Step 3: Cross multiply
    468.32x = 646.27 × 261.32
  4. Step 4: Simplify right side
    468.32x = 168,880.05
  5. Step 5: Solve for x
    x = 168,880.05/468.32
  6. Step 6: Final answer
    x = 360.61

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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.