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Finding the Fourth Proportional to 1,316.97, 1,817.08 and 757.59

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Solution

The fourth proportional to 1,316.97, 1,817.08 and 757.59 is: 1,045.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.97 : 1,817.08 = 757.59 : x
  2. Step 2: Convert to fraction form
    1,316.97/1,817.08 = 757.59/x
  3. Step 3: Cross multiply
    1,316.97x = 1,817.08 × 757.59
  4. Step 4: Simplify right side
    1,316.97x = 1,376,601.64
  5. Step 5: Solve for x
    x = 1,376,601.64/1,316.97
  6. Step 6: Final answer
    x = 1,045.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.