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Finding the Fourth Proportional to 455.74, 683.62 and 181.76

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Solution

The fourth proportional to 455.74, 683.62 and 181.76 is: 272.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.74 : 683.62 = 181.76 : x
  2. Step 2: Convert to fraction form
    455.74/683.62 = 181.76/x
  3. Step 3: Cross multiply
    455.74x = 683.62 × 181.76
  4. Step 4: Simplify right side
    455.74x = 124,254.77
  5. Step 5: Solve for x
    x = 124,254.77/455.74
  6. Step 6: Final answer
    x = 272.64

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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.