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Finding the Fourth Proportional to 1,181.47, 1,772.16 and 303.98

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Solution

The fourth proportional to 1,181.47, 1,772.16 and 303.98 is: 455.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.47 : 1,772.16 = 303.98 : x
  2. Step 2: Convert to fraction form
    1,181.47/1,772.16 = 303.98/x
  3. Step 3: Cross multiply
    1,181.47x = 1,772.16 × 303.98
  4. Step 4: Simplify right side
    1,181.47x = 538,701.20
  5. Step 5: Solve for x
    x = 538,701.20/1,181.47
  6. Step 6: Final answer
    x = 455.96

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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.