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Finding the Fourth Proportional to 522.04, 783.04 and 137.28

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Solution

The fourth proportional to 522.04, 783.04 and 137.28 is: 205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.04 : 783.04 = 137.28 : x
  2. Step 2: Convert to fraction form
    522.04/783.04 = 137.28/x
  3. Step 3: Cross multiply
    522.04x = 783.04 × 137.28
  4. Step 4: Simplify right side
    522.04x = 107,495.73
  5. Step 5: Solve for x
    x = 107,495.73/522.04
  6. Step 6: Final answer
    x = 205.91

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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.