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Finding the Fourth Proportional to 703.39, 969.51 and 644.56

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Solution

The fourth proportional to 703.39, 969.51 and 644.56 is: 888.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.39 : 969.51 = 644.56 : x
  2. Step 2: Convert to fraction form
    703.39/969.51 = 644.56/x
  3. Step 3: Cross multiply
    703.39x = 969.51 × 644.56
  4. Step 4: Simplify right side
    703.39x = 624,907.37
  5. Step 5: Solve for x
    x = 624,907.37/703.39
  6. Step 6: Final answer
    x = 888.42

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Double scale
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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.