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Finding the Fourth Proportional to 484.18, 725.85 and 210.49

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Solution

The fourth proportional to 484.18, 725.85 and 210.49 is: 315.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.18 : 725.85 = 210.49 : x
  2. Step 2: Convert to fraction form
    484.18/725.85 = 210.49/x
  3. Step 3: Cross multiply
    484.18x = 725.85 × 210.49
  4. Step 4: Simplify right side
    484.18x = 152,784.17
  5. Step 5: Solve for x
    x = 152,784.17/484.18
  6. Step 6: Final answer
    x = 315.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.