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Finding the Fourth Proportional to 448.85, 619.26 and 262.28

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Solution

The fourth proportional to 448.85, 619.26 and 262.28 is: 361.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.85 : 619.26 = 262.28 : x
  2. Step 2: Convert to fraction form
    448.85/619.26 = 262.28/x
  3. Step 3: Cross multiply
    448.85x = 619.26 × 262.28
  4. Step 4: Simplify right side
    448.85x = 162,419.51
  5. Step 5: Solve for x
    x = 162,419.51/448.85
  6. Step 6: Final answer
    x = 361.86

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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.