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Finding the Fourth Proportional to 522.20, 783.34 and 156.96

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Solution

The fourth proportional to 522.20, 783.34 and 156.96 is: 235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.20 : 783.34 = 156.96 : x
  2. Step 2: Convert to fraction form
    522.20/783.34 = 156.96/x
  3. Step 3: Cross multiply
    522.20x = 783.34 × 156.96
  4. Step 4: Simplify right side
    522.20x = 122,953.05
  5. Step 5: Solve for x
    x = 122,953.05/522.20
  6. Step 6: Final answer
    x = 235.45

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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.