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Finding the Fourth Proportional to 755.01, 1,036.36 and 670.26

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Solution

The fourth proportional to 755.01, 1,036.36 and 670.26 is: 920.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.01 : 1,036.36 = 670.26 : x
  2. Step 2: Convert to fraction form
    755.01/1,036.36 = 670.26/x
  3. Step 3: Cross multiply
    755.01x = 1,036.36 × 670.26
  4. Step 4: Simplify right side
    755.01x = 694,630.65
  5. Step 5: Solve for x
    x = 694,630.65/755.01
  6. Step 6: Final answer
    x = 920.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.