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Finding the Fourth Proportional to 522, 720.37 and 300.94

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Solution

The fourth proportional to 522, 720.37 and 300.94 is: 415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522 : 720.37 = 300.94 : x
  2. Step 2: Convert to fraction form
    522/720.37 = 300.94/x
  3. Step 3: Cross multiply
    522x = 720.37 × 300.94
  4. Step 4: Simplify right side
    522x = 216,785.59
  5. Step 5: Solve for x
    x = 216,785.59/522
  6. Step 6: Final answer
    x = 415.30

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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.