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Finding the Fourth Proportional to 451.13, 622.55 and 296.15

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Solution

The fourth proportional to 451.13, 622.55 and 296.15 is: 408.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.13 : 622.55 = 296.15 : x
  2. Step 2: Convert to fraction form
    451.13/622.55 = 296.15/x
  3. Step 3: Cross multiply
    451.13x = 622.55 × 296.15
  4. Step 4: Simplify right side
    451.13x = 184,365.81
  5. Step 5: Solve for x
    x = 184,365.81/451.13
  6. Step 6: Final answer
    x = 408.68

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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.