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Finding the Fourth Proportional to 301.98, 453.23 and 215.53

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Solution

The fourth proportional to 301.98, 453.23 and 215.53 is: 323.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.98 : 453.23 = 215.53 : x
  2. Step 2: Convert to fraction form
    301.98/453.23 = 215.53/x
  3. Step 3: Cross multiply
    301.98x = 453.23 × 215.53
  4. Step 4: Simplify right side
    301.98x = 97,682.40
  5. Step 5: Solve for x
    x = 97,682.40/301.98
  6. Step 6: Final answer
    x = 323.47

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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.