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Finding the Fourth Proportional to 670.06, 1,004.28 and 453.25

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Solution

The fourth proportional to 670.06, 1,004.28 and 453.25 is: 679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.06 : 1,004.28 = 453.25 : x
  2. Step 2: Convert to fraction form
    670.06/1,004.28 = 453.25/x
  3. Step 3: Cross multiply
    670.06x = 1,004.28 × 453.25
  4. Step 4: Simplify right side
    670.06x = 455,189.91
  5. Step 5: Solve for x
    x = 455,189.91/670.06
  6. Step 6: Final answer
    x = 679.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.