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Finding the Fourth Proportional to 975.88, 1,463.90 and 488.92

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Solution

The fourth proportional to 975.88, 1,463.90 and 488.92 is: 733.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.88 : 1,463.90 = 488.92 : x
  2. Step 2: Convert to fraction form
    975.88/1,463.90 = 488.92/x
  3. Step 3: Cross multiply
    975.88x = 1,463.90 × 488.92
  4. Step 4: Simplify right side
    975.88x = 715,729.99
  5. Step 5: Solve for x
    x = 715,729.99/975.88
  6. Step 6: Final answer
    x = 733.42

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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.