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Finding the Fourth Proportional to 599.85, 899.66 and 215.01

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Solution

The fourth proportional to 599.85, 899.66 and 215.01 is: 322.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.85 : 899.66 = 215.01 : x
  2. Step 2: Convert to fraction form
    599.85/899.66 = 215.01/x
  3. Step 3: Cross multiply
    599.85x = 899.66 × 215.01
  4. Step 4: Simplify right side
    599.85x = 193,434.82
  5. Step 5: Solve for x
    x = 193,434.82/599.85
  6. Step 6: Final answer
    x = 322.47

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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.