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Finding the Fourth Proportional to 576.90, 866.67 and 522.90

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Solution

The fourth proportional to 576.90, 866.67 and 522.90 is: 785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.90 : 866.67 = 522.90 : x
  2. Step 2: Convert to fraction form
    576.90/866.67 = 522.90/x
  3. Step 3: Cross multiply
    576.90x = 866.67 × 522.90
  4. Step 4: Simplify right side
    576.90x = 453,181.74
  5. Step 5: Solve for x
    x = 453,181.74/576.90
  6. Step 6: Final answer
    x = 785.55

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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.