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Finding the Fourth Proportional to 988.29, 1,481.22 and 526.19

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Solution

The fourth proportional to 988.29, 1,481.22 and 526.19 is: 788.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.29 : 1,481.22 = 526.19 : x
  2. Step 2: Convert to fraction form
    988.29/1,481.22 = 526.19/x
  3. Step 3: Cross multiply
    988.29x = 1,481.22 × 526.19
  4. Step 4: Simplify right side
    988.29x = 779,395.75
  5. Step 5: Solve for x
    x = 779,395.75/988.29
  6. Step 6: Final answer
    x = 788.63

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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.