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Finding the Fourth Proportional to 548, 820.77 and 303.98

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Solution

The fourth proportional to 548, 820.77 and 303.98 is: 455.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    548 : 820.77 = 303.98 : x
  2. Step 2: Convert to fraction form
    548/820.77 = 303.98/x
  3. Step 3: Cross multiply
    548x = 820.77 × 303.98
  4. Step 4: Simplify right side
    548x = 249,497.66
  5. Step 5: Solve for x
    x = 249,497.66/548
  6. Step 6: Final answer
    x = 455.29

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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.