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Finding the Fourth Proportional to 546.69, 820.61 and 303.42

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Solution

The fourth proportional to 546.69, 820.61 and 303.42 is: 455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.69 : 820.61 = 303.42 : x
  2. Step 2: Convert to fraction form
    546.69/820.61 = 303.42/x
  3. Step 3: Cross multiply
    546.69x = 820.61 × 303.42
  4. Step 4: Simplify right side
    546.69x = 248,989.49
  5. Step 5: Solve for x
    x = 248,989.49/546.69
  6. Step 6: Final answer
    x = 455.45

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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.