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Finding the Fourth Proportional to 485.27, 669.98 and 337.85

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Solution

The fourth proportional to 485.27, 669.98 and 337.85 is: 466.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.27 : 669.98 = 337.85 : x
  2. Step 2: Convert to fraction form
    485.27/669.98 = 337.85/x
  3. Step 3: Cross multiply
    485.27x = 669.98 × 337.85
  4. Step 4: Simplify right side
    485.27x = 226,352.74
  5. Step 5: Solve for x
    x = 226,352.74/485.27
  6. Step 6: Final answer
    x = 466.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.