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Finding the Fourth Proportional to 513.14, 769.05 and 446.98

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Solution

The fourth proportional to 513.14, 769.05 and 446.98 is: 669.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.14 : 769.05 = 446.98 : x
  2. Step 2: Convert to fraction form
    513.14/769.05 = 446.98/x
  3. Step 3: Cross multiply
    513.14x = 769.05 × 446.98
  4. Step 4: Simplify right side
    513.14x = 343,746.77
  5. Step 5: Solve for x
    x = 343,746.77/513.14
  6. Step 6: Final answer
    x = 669.89

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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.