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Finding the Fourth Proportional to 451.04, 619.12 and 400.82

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Solution

The fourth proportional to 451.04, 619.12 and 400.82 is: 550.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.04 : 619.12 = 400.82 : x
  2. Step 2: Convert to fraction form
    451.04/619.12 = 400.82/x
  3. Step 3: Cross multiply
    451.04x = 619.12 × 400.82
  4. Step 4: Simplify right side
    451.04x = 248,155.68
  5. Step 5: Solve for x
    x = 248,155.68/451.04
  6. Step 6: Final answer
    x = 550.19

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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.