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Finding the Fourth Proportional to 599.80, 899.34 and 209.58

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Solution

The fourth proportional to 599.80, 899.34 and 209.58 is: 314.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.80 : 899.34 = 209.58 : x
  2. Step 2: Convert to fraction form
    599.80/899.34 = 209.58/x
  3. Step 3: Cross multiply
    599.80x = 899.34 × 209.58
  4. Step 4: Simplify right side
    599.80x = 188,483.68
  5. Step 5: Solve for x
    x = 188,483.68/599.80
  6. Step 6: Final answer
    x = 314.24

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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.