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Finding the Fourth Proportional to 1,266.53, 1,899.81 and 607.68

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Solution

The fourth proportional to 1,266.53, 1,899.81 and 607.68 is: 911.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.53 : 1,899.81 = 607.68 : x
  2. Step 2: Convert to fraction form
    1,266.53/1,899.81 = 607.68/x
  3. Step 3: Cross multiply
    1,266.53x = 1,899.81 × 607.68
  4. Step 4: Simplify right side
    1,266.53x = 1,154,476.54
  5. Step 5: Solve for x
    x = 1,154,476.54/1,266.53
  6. Step 6: Final answer
    x = 911.53

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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.