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Finding the Fourth Proportional to 455.04, 627.72 and 277.92

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Solution

The fourth proportional to 455.04, 627.72 and 277.92 is: 383.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.04 : 627.72 = 277.92 : x
  2. Step 2: Convert to fraction form
    455.04/627.72 = 277.92/x
  3. Step 3: Cross multiply
    455.04x = 627.72 × 277.92
  4. Step 4: Simplify right side
    455.04x = 174,455.94
  5. Step 5: Solve for x
    x = 174,455.94/455.04
  6. Step 6: Final answer
    x = 383.39

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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.