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Finding the Fourth Proportional to 448.79, 619.38 and 262.28

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Solution

The fourth proportional to 448.79, 619.38 and 262.28 is: 361.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.79 : 619.38 = 262.28 : x
  2. Step 2: Convert to fraction form
    448.79/619.38 = 262.28/x
  3. Step 3: Cross multiply
    448.79x = 619.38 × 262.28
  4. Step 4: Simplify right side
    448.79x = 162,452.53
  5. Step 5: Solve for x
    x = 162,452.53/448.79
  6. Step 6: Final answer
    x = 361.98

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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.