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Finding the Fourth Proportional to 606.99, 835.72 and 513.54

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Solution

The fourth proportional to 606.99, 835.72 and 513.54 is: 707.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.99 : 835.72 = 513.54 : x
  2. Step 2: Convert to fraction form
    606.99/835.72 = 513.54/x
  3. Step 3: Cross multiply
    606.99x = 835.72 × 513.54
  4. Step 4: Simplify right side
    606.99x = 429,174.36
  5. Step 5: Solve for x
    x = 429,174.36/606.99
  6. Step 6: Final answer
    x = 707.05

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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.