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Finding the Fourth Proportional to 669.44, 1,004.80 and 583.04

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Solution

The fourth proportional to 669.44, 1,004.80 and 583.04 is: 875.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.44 : 1,004.80 = 583.04 : x
  2. Step 2: Convert to fraction form
    669.44/1,004.80 = 583.04/x
  3. Step 3: Cross multiply
    669.44x = 1,004.80 × 583.04
  4. Step 4: Simplify right side
    669.44x = 585,838.59
  5. Step 5: Solve for x
    x = 585,838.59/669.44
  6. Step 6: Final answer
    x = 875.12

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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.