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Finding the Fourth Proportional to 988.02, 1,479.36 and 792.06

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Solution

The fourth proportional to 988.02, 1,479.36 and 792.06 is: 1,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.02 : 1,479.36 = 792.06 : x
  2. Step 2: Convert to fraction form
    988.02/1,479.36 = 792.06/x
  3. Step 3: Cross multiply
    988.02x = 1,479.36 × 792.06
  4. Step 4: Simplify right side
    988.02x = 1,171,741.88
  5. Step 5: Solve for x
    x = 1,171,741.88/988.02
  6. Step 6: Final answer
    x = 1,185.95

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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.