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Finding the Fourth Proportional to 468.21, 646.16 and 266.33

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Solution

The fourth proportional to 468.21, 646.16 and 266.33 is: 367.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.21 : 646.16 = 266.33 : x
  2. Step 2: Convert to fraction form
    468.21/646.16 = 266.33/x
  3. Step 3: Cross multiply
    468.21x = 646.16 × 266.33
  4. Step 4: Simplify right side
    468.21x = 172,087.23
  5. Step 5: Solve for x
    x = 172,087.23/468.21
  6. Step 6: Final answer
    x = 367.54

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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.