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Finding the Fourth Proportional to 455.07, 627.99 and 248.07

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Solution

The fourth proportional to 455.07, 627.99 and 248.07 is: 342.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.07 : 627.99 = 248.07 : x
  2. Step 2: Convert to fraction form
    455.07/627.99 = 248.07/x
  3. Step 3: Cross multiply
    455.07x = 627.99 × 248.07
  4. Step 4: Simplify right side
    455.07x = 155,785.48
  5. Step 5: Solve for x
    x = 155,785.48/455.07
  6. Step 6: Final answer
    x = 342.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.