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Finding the Fourth Proportional to 1,168.42, 1,750.50 and 679.99

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Solution

The fourth proportional to 1,168.42, 1,750.50 and 679.99 is: 1,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.42 : 1,750.50 = 679.99 : x
  2. Step 2: Convert to fraction form
    1,168.42/1,750.50 = 679.99/x
  3. Step 3: Cross multiply
    1,168.42x = 1,750.50 × 679.99
  4. Step 4: Simplify right side
    1,168.42x = 1,190,322.50
  5. Step 5: Solve for x
    x = 1,190,322.50/1,168.42
  6. Step 6: Final answer
    x = 1,018.75

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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.