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Finding the Fourth Proportional to 933.56, 1,288.44 and 700.28

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Solution

The fourth proportional to 933.56, 1,288.44 and 700.28 is: 966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.56 : 1,288.44 = 700.28 : x
  2. Step 2: Convert to fraction form
    933.56/1,288.44 = 700.28/x
  3. Step 3: Cross multiply
    933.56x = 1,288.44 × 700.28
  4. Step 4: Simplify right side
    933.56x = 902,268.76
  5. Step 5: Solve for x
    x = 902,268.76/933.56
  6. Step 6: Final answer
    x = 966.48

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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.