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Finding the Fourth Proportional to 989.04, 1,482.84 and 604.56

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Solution

The fourth proportional to 989.04, 1,482.84 and 604.56 is: 906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    989.04 : 1,482.84 = 604.56 : x
  2. Step 2: Convert to fraction form
    989.04/1,482.84 = 604.56/x
  3. Step 3: Cross multiply
    989.04x = 1,482.84 × 604.56
  4. Step 4: Simplify right side
    989.04x = 896,465.75
  5. Step 5: Solve for x
    x = 896,465.75/989.04
  6. Step 6: Final answer
    x = 906.40

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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.