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Finding the Fourth Proportional to 468.50, 646.54 and 282.12

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Solution

The fourth proportional to 468.50, 646.54 and 282.12 is: 389.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.50 : 646.54 = 282.12 : x
  2. Step 2: Convert to fraction form
    468.50/646.54 = 282.12/x
  3. Step 3: Cross multiply
    468.50x = 646.54 × 282.12
  4. Step 4: Simplify right side
    468.50x = 182,401.86
  5. Step 5: Solve for x
    x = 182,401.86/468.50
  6. Step 6: Final answer
    x = 389.33

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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.