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Finding the Fourth Proportional to 484.84, 669.84 and 411.92

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Solution

The fourth proportional to 484.84, 669.84 and 411.92 is: 569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.84 : 669.84 = 411.92 : x
  2. Step 2: Convert to fraction form
    484.84/669.84 = 411.92/x
  3. Step 3: Cross multiply
    484.84x = 669.84 × 411.92
  4. Step 4: Simplify right side
    484.84x = 275,920.49
  5. Step 5: Solve for x
    x = 275,920.49/484.84
  6. Step 6: Final answer
    x = 569.10

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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.