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Finding the Fourth Proportional to 455.63, 625.73 and 423.51

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Solution

The fourth proportional to 455.63, 625.73 and 423.51 is: 581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.63 : 625.73 = 423.51 : x
  2. Step 2: Convert to fraction form
    455.63/625.73 = 423.51/x
  3. Step 3: Cross multiply
    455.63x = 625.73 × 423.51
  4. Step 4: Simplify right side
    455.63x = 265,002.91
  5. Step 5: Solve for x
    x = 265,002.91/455.63
  6. Step 6: Final answer
    x = 581.62

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.