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Finding the Fourth Proportional to 522.70, 783.44 and 291.54

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Solution

The fourth proportional to 522.70, 783.44 and 291.54 is: 436.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.70 : 783.44 = 291.54 : x
  2. Step 2: Convert to fraction form
    522.70/783.44 = 291.54/x
  3. Step 3: Cross multiply
    522.70x = 783.44 × 291.54
  4. Step 4: Simplify right side
    522.70x = 228,404.10
  5. Step 5: Solve for x
    x = 228,404.10/522.70
  6. Step 6: Final answer
    x = 436.97

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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.