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Finding the Fourth Proportional to 488.75, 733.13 and 146.75

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Solution

The fourth proportional to 488.75, 733.13 and 146.75 is: 220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.75 : 733.13 = 146.75 : x
  2. Step 2: Convert to fraction form
    488.75/733.13 = 146.75/x
  3. Step 3: Cross multiply
    488.75x = 733.13 × 146.75
  4. Step 4: Simplify right side
    488.75x = 107,586.83
  5. Step 5: Solve for x
    x = 107,586.83/488.75
  6. Step 6: Final answer
    x = 220.13

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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.