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Finding the Fourth Proportional to 301.76, 453.08 and 172.02

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Solution

The fourth proportional to 301.76, 453.08 and 172.02 is: 258.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.76 : 453.08 = 172.02 : x
  2. Step 2: Convert to fraction form
    301.76/453.08 = 172.02/x
  3. Step 3: Cross multiply
    301.76x = 453.08 × 172.02
  4. Step 4: Simplify right side
    301.76x = 77,938.82
  5. Step 5: Solve for x
    x = 77,938.82/301.76
  6. Step 6: Final answer
    x = 258.28

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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.