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Finding the Fourth Proportional to 988.22, 1,482.75 and 525.89

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Solution

The fourth proportional to 988.22, 1,482.75 and 525.89 is: 789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.22 : 1,482.75 = 525.89 : x
  2. Step 2: Convert to fraction form
    988.22/1,482.75 = 525.89/x
  3. Step 3: Cross multiply
    988.22x = 1,482.75 × 525.89
  4. Step 4: Simplify right side
    988.22x = 779,755.98
  5. Step 5: Solve for x
    x = 779,755.98/988.22
  6. Step 6: Final answer
    x = 789.05

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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.