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Finding the Fourth Proportional to 1,120.80, 1,546.64 and 700.94

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Solution

The fourth proportional to 1,120.80, 1,546.64 and 700.94 is: 967.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.80 : 1,546.64 = 700.94 : x
  2. Step 2: Convert to fraction form
    1,120.80/1,546.64 = 700.94/x
  3. Step 3: Cross multiply
    1,120.80x = 1,546.64 × 700.94
  4. Step 4: Simplify right side
    1,120.80x = 1,084,090.60
  5. Step 5: Solve for x
    x = 1,084,090.60/1,120.80
  6. Step 6: Final answer
    x = 967.25

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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.