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Finding the Fourth Proportional to 302.15, 452.74 and 272.18

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Solution

The fourth proportional to 302.15, 452.74 and 272.18 is: 407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.15 : 452.74 = 272.18 : x
  2. Step 2: Convert to fraction form
    302.15/452.74 = 272.18/x
  3. Step 3: Cross multiply
    302.15x = 452.74 × 272.18
  4. Step 4: Simplify right side
    302.15x = 123,226.77
  5. Step 5: Solve for x
    x = 123,226.77/302.15
  6. Step 6: Final answer
    x = 407.83

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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.