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Finding the Fourth Proportional to 326.30, 485.24 and 316.04

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Solution

The fourth proportional to 326.30, 485.24 and 316.04 is: 469.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.30 : 485.24 = 316.04 : x
  2. Step 2: Convert to fraction form
    326.30/485.24 = 316.04/x
  3. Step 3: Cross multiply
    326.30x = 485.24 × 316.04
  4. Step 4: Simplify right side
    326.30x = 153,355.25
  5. Step 5: Solve for x
    x = 153,355.25/326.30
  6. Step 6: Final answer
    x = 469.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.