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Finding the Fourth Proportional to 893.23, 1,232.61 and 628.06

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Solution

The fourth proportional to 893.23, 1,232.61 and 628.06 is: 866.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.23 : 1,232.61 = 628.06 : x
  2. Step 2: Convert to fraction form
    893.23/1,232.61 = 628.06/x
  3. Step 3: Cross multiply
    893.23x = 1,232.61 × 628.06
  4. Step 4: Simplify right side
    893.23x = 774,146.87
  5. Step 5: Solve for x
    x = 774,146.87/893.23
  6. Step 6: Final answer
    x = 866.69

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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.