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Finding the Fourth Proportional to 468.42, 646.44 and 281.92

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Solution

The fourth proportional to 468.42, 646.44 and 281.92 is: 389.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.42 : 646.44 = 281.92 : x
  2. Step 2: Convert to fraction form
    468.42/646.44 = 281.92/x
  3. Step 3: Cross multiply
    468.42x = 646.44 × 281.92
  4. Step 4: Simplify right side
    468.42x = 182,244.36
  5. Step 5: Solve for x
    x = 182,244.36/468.42
  6. Step 6: Final answer
    x = 389.06

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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.