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Finding the Fourth Proportional to 522.21, 720.56 and 335.64

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Solution

The fourth proportional to 522.21, 720.56 and 335.64 is: 463.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.21 : 720.56 = 335.64 : x
  2. Step 2: Convert to fraction form
    522.21/720.56 = 335.64/x
  3. Step 3: Cross multiply
    522.21x = 720.56 × 335.64
  4. Step 4: Simplify right side
    522.21x = 241,852.30
  5. Step 5: Solve for x
    x = 241,852.30/522.21
  6. Step 6: Final answer
    x = 463.13

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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.