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Finding the Fourth Proportional to 468.84, 647.88 and 329.52

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Solution

The fourth proportional to 468.84, 647.88 and 329.52 is: 455.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.84 : 647.88 = 329.52 : x
  2. Step 2: Convert to fraction form
    468.84/647.88 = 329.52/x
  3. Step 3: Cross multiply
    468.84x = 647.88 × 329.52
  4. Step 4: Simplify right side
    468.84x = 213,489.42
  5. Step 5: Solve for x
    x = 213,489.42/468.84
  6. Step 6: Final answer
    x = 455.36

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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.