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Finding the Fourth Proportional to 930.03, 1,282.56 and 694.55

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Solution

The fourth proportional to 930.03, 1,282.56 and 694.55 is: 957.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.03 : 1,282.56 = 694.55 : x
  2. Step 2: Convert to fraction form
    930.03/1,282.56 = 694.55/x
  3. Step 3: Cross multiply
    930.03x = 1,282.56 × 694.55
  4. Step 4: Simplify right side
    930.03x = 890,795.64
  5. Step 5: Solve for x
    x = 890,795.64/930.03
  6. Step 6: Final answer
    x = 957.81

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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.