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Finding the Fourth Proportional to 522.35, 720.65 and 301.35

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Solution

The fourth proportional to 522.35, 720.65 and 301.35 is: 415.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.35 : 720.65 = 301.35 : x
  2. Step 2: Convert to fraction form
    522.35/720.65 = 301.35/x
  3. Step 3: Cross multiply
    522.35x = 720.65 × 301.35
  4. Step 4: Simplify right side
    522.35x = 217,166.37
  5. Step 5: Solve for x
    x = 217,166.37/522.35
  6. Step 6: Final answer
    x = 415.75

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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.