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Finding the Fourth Proportional to 451.04, 673.28 and 417.18

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Solution

The fourth proportional to 451.04, 673.28 and 417.18 is: 622.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.04 : 673.28 = 417.18 : x
  2. Step 2: Convert to fraction form
    451.04/673.28 = 417.18/x
  3. Step 3: Cross multiply
    451.04x = 673.28 × 417.18
  4. Step 4: Simplify right side
    451.04x = 280,880.95
  5. Step 5: Solve for x
    x = 280,880.95/451.04
  6. Step 6: Final answer
    x = 622.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.