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Finding the Fourth Proportional to 989.03, 1,482.50 and 441.59

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Solution

The fourth proportional to 989.03, 1,482.50 and 441.59 is: 661.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    989.03 : 1,482.50 = 441.59 : x
  2. Step 2: Convert to fraction form
    989.03/1,482.50 = 441.59/x
  3. Step 3: Cross multiply
    989.03x = 1,482.50 × 441.59
  4. Step 4: Simplify right side
    989.03x = 654,647.55
  5. Step 5: Solve for x
    x = 654,647.55/989.03
  6. Step 6: Final answer
    x = 661.91

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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.