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Finding the Fourth Proportional to 326.04, 488.72 and 210.57

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Solution

The fourth proportional to 326.04, 488.72 and 210.57 is: 315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.04 : 488.72 = 210.57 : x
  2. Step 2: Convert to fraction form
    326.04/488.72 = 210.57/x
  3. Step 3: Cross multiply
    326.04x = 488.72 × 210.57
  4. Step 4: Simplify right side
    326.04x = 102,907.28
  5. Step 5: Solve for x
    x = 102,907.28/326.04
  6. Step 6: Final answer
    x = 315.63

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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.