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Finding the Fourth Proportional to 988.46, 1,481.42 and 526.46

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Solution

The fourth proportional to 988.46, 1,481.42 and 526.46 is: 789.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.46 : 1,481.42 = 526.46 : x
  2. Step 2: Convert to fraction form
    988.46/1,481.42 = 526.46/x
  3. Step 3: Cross multiply
    988.46x = 1,481.42 × 526.46
  4. Step 4: Simplify right side
    988.46x = 779,908.37
  5. Step 5: Solve for x
    x = 779,908.37/988.46
  6. Step 6: Final answer
    x = 789.01

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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.