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Finding the Fourth Proportional to 448.06, 671.61 and 155.28

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Solution

The fourth proportional to 448.06, 671.61 and 155.28 is: 232.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.06 : 671.61 = 155.28 : x
  2. Step 2: Convert to fraction form
    448.06/671.61 = 155.28/x
  3. Step 3: Cross multiply
    448.06x = 671.61 × 155.28
  4. Step 4: Simplify right side
    448.06x = 104,287.60
  5. Step 5: Solve for x
    x = 104,287.60/448.06
  6. Step 6: Final answer
    x = 232.75

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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.