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Finding the Fourth Proportional to 599.88, 899.85 and 513.78

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Solution

The fourth proportional to 599.88, 899.85 and 513.78 is: 770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.88 : 899.85 = 513.78 : x
  2. Step 2: Convert to fraction form
    599.88/899.85 = 513.78/x
  3. Step 3: Cross multiply
    599.88x = 899.85 × 513.78
  4. Step 4: Simplify right side
    599.88x = 462,324.93
  5. Step 5: Solve for x
    x = 462,324.93/599.88
  6. Step 6: Final answer
    x = 770.70

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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.