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Finding the Fourth Proportional to 1,172.68, 1,759.02 and 306.99

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Solution

The fourth proportional to 1,172.68, 1,759.02 and 306.99 is: 460.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172.68 : 1,759.02 = 306.99 : x
  2. Step 2: Convert to fraction form
    1,172.68/1,759.02 = 306.99/x
  3. Step 3: Cross multiply
    1,172.68x = 1,759.02 × 306.99
  4. Step 4: Simplify right side
    1,172.68x = 540,000.01
  5. Step 5: Solve for x
    x = 540,000.01/1,172.68
  6. Step 6: Final answer
    x = 460.49

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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.