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Finding the Fourth Proportional to 522.21, 783.04 and 156.95

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Solution

The fourth proportional to 522.21, 783.04 and 156.95 is: 235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.21 : 783.04 = 156.95 : x
  2. Step 2: Convert to fraction form
    522.21/783.04 = 156.95/x
  3. Step 3: Cross multiply
    522.21x = 783.04 × 156.95
  4. Step 4: Simplify right side
    522.21x = 122,895.00
  5. Step 5: Solve for x
    x = 122,895.00/522.21
  6. Step 6: Final answer
    x = 235.34

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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.