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Finding the Fourth Proportional to 929.77, 1,394.52 and 336.73

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Solution

The fourth proportional to 929.77, 1,394.52 and 336.73 is: 505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.77 : 1,394.52 = 336.73 : x
  2. Step 2: Convert to fraction form
    929.77/1,394.52 = 336.73/x
  3. Step 3: Cross multiply
    929.77x = 1,394.52 × 336.73
  4. Step 4: Simplify right side
    929.77x = 469,576.72
  5. Step 5: Solve for x
    x = 469,576.72/929.77
  6. Step 6: Final answer
    x = 505.05

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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.