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Finding the Fourth Proportional to 1,173, 1,618.58 and 701.09

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Solution

The fourth proportional to 1,173, 1,618.58 and 701.09 is: 967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173 : 1,618.58 = 701.09 : x
  2. Step 2: Convert to fraction form
    1,173/1,618.58 = 701.09/x
  3. Step 3: Cross multiply
    1,173x = 1,618.58 × 701.09
  4. Step 4: Simplify right side
    1,173x = 1,134,770.25
  5. Step 5: Solve for x
    x = 1,134,770.25/1,173
  6. Step 6: Final answer
    x = 967.41

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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.