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Finding the Fourth Proportional to 451.24, 622.75 and 283.31

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Solution

The fourth proportional to 451.24, 622.75 and 283.31 is: 390.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.24 : 622.75 = 283.31 : x
  2. Step 2: Convert to fraction form
    451.24/622.75 = 283.31/x
  3. Step 3: Cross multiply
    451.24x = 622.75 × 283.31
  4. Step 4: Simplify right side
    451.24x = 176,430.35
  5. Step 5: Solve for x
    x = 176,430.35/451.24
  6. Step 6: Final answer
    x = 390.99

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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.