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Finding the Fourth Proportional to 522.66, 721.13 and 326.37

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Solution

The fourth proportional to 522.66, 721.13 and 326.37 is: 450.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.66 : 721.13 = 326.37 : x
  2. Step 2: Convert to fraction form
    522.66/721.13 = 326.37/x
  3. Step 3: Cross multiply
    522.66x = 721.13 × 326.37
  4. Step 4: Simplify right side
    522.66x = 235,353.57
  5. Step 5: Solve for x
    x = 235,353.57/522.66
  6. Step 6: Final answer
    x = 450.30

Related Problems

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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.