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Finding the Fourth Proportional to 488.76, 733.28 and 200.40

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Solution

The fourth proportional to 488.76, 733.28 and 200.40 is: 300.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.76 : 733.28 = 200.40 : x
  2. Step 2: Convert to fraction form
    488.76/733.28 = 200.40/x
  3. Step 3: Cross multiply
    488.76x = 733.28 × 200.40
  4. Step 4: Simplify right side
    488.76x = 146,948.31
  5. Step 5: Solve for x
    x = 146,948.31/488.76
  6. Step 6: Final answer
    x = 300.66

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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.