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Finding the Fourth Proportional to 859.06, 1,185.57 and 626.26

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Solution

The fourth proportional to 859.06, 1,185.57 and 626.26 is: 864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    859.06 : 1,185.57 = 626.26 : x
  2. Step 2: Convert to fraction form
    859.06/1,185.57 = 626.26/x
  3. Step 3: Cross multiply
    859.06x = 1,185.57 × 626.26
  4. Step 4: Simplify right side
    859.06x = 742,475.07
  5. Step 5: Solve for x
    x = 742,475.07/859.06
  6. Step 6: Final answer
    x = 864.29

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1.5x scale

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.