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Finding the Fourth Proportional to 930.56, 1,394.72 and 352.96

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Solution

The fourth proportional to 930.56, 1,394.72 and 352.96 is: 529.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.56 : 1,394.72 = 352.96 : x
  2. Step 2: Convert to fraction form
    930.56/1,394.72 = 352.96/x
  3. Step 3: Cross multiply
    930.56x = 1,394.72 × 352.96
  4. Step 4: Simplify right side
    930.56x = 492,280.37
  5. Step 5: Solve for x
    x = 492,280.37/930.56
  6. Step 6: Final answer
    x = 529.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.