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Finding the Fourth Proportional to 797.98, 1,101.21 and 448.67

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Solution

The fourth proportional to 797.98, 1,101.21 and 448.67 is: 619.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.98 : 1,101.21 = 448.67 : x
  2. Step 2: Convert to fraction form
    797.98/1,101.21 = 448.67/x
  3. Step 3: Cross multiply
    797.98x = 1,101.21 × 448.67
  4. Step 4: Simplify right side
    797.98x = 494,079.89
  5. Step 5: Solve for x
    x = 494,079.89/797.98
  6. Step 6: Final answer
    x = 619.16

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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.