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Finding the Fourth Proportional to 669.24, 1,003.95 and 304.02

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Solution

The fourth proportional to 669.24, 1,003.95 and 304.02 is: 456.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.24 : 1,003.95 = 304.02 : x
  2. Step 2: Convert to fraction form
    669.24/1,003.95 = 304.02/x
  3. Step 3: Cross multiply
    669.24x = 1,003.95 × 304.02
  4. Step 4: Simplify right side
    669.24x = 305,220.88
  5. Step 5: Solve for x
    x = 305,220.88/669.24
  6. Step 6: Final answer
    x = 456.07

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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.