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Finding the Fourth Proportional to 996.14, 1,494.36 and 346.72

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Solution

The fourth proportional to 996.14, 1,494.36 and 346.72 is: 520.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.14 : 1,494.36 = 346.72 : x
  2. Step 2: Convert to fraction form
    996.14/1,494.36 = 346.72/x
  3. Step 3: Cross multiply
    996.14x = 1,494.36 × 346.72
  4. Step 4: Simplify right side
    996.14x = 518,124.50
  5. Step 5: Solve for x
    x = 518,124.50/996.14
  6. Step 6: Final answer
    x = 520.13

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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.