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Finding the Fourth Proportional to 427.44, 590.16 and 272.40

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Solution

The fourth proportional to 427.44, 590.16 and 272.40 is: 376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.44 : 590.16 = 272.40 : x
  2. Step 2: Convert to fraction form
    427.44/590.16 = 272.40/x
  3. Step 3: Cross multiply
    427.44x = 590.16 × 272.40
  4. Step 4: Simplify right side
    427.44x = 160,759.58
  5. Step 5: Solve for x
    x = 160,759.58/427.44
  6. Step 6: Final answer
    x = 376.10

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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.