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Finding the Fourth Proportional to 485.85, 668.93 and 452.73

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Solution

The fourth proportional to 485.85, 668.93 and 452.73 is: 623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.85 : 668.93 = 452.73 : x
  2. Step 2: Convert to fraction form
    485.85/668.93 = 452.73/x
  3. Step 3: Cross multiply
    485.85x = 668.93 × 452.73
  4. Step 4: Simplify right side
    485.85x = 302,842.42
  5. Step 5: Solve for x
    x = 302,842.42/485.85
  6. Step 6: Final answer
    x = 623.32

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1.5x scale

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.