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Finding the Fourth Proportional to 609, 912.94 and 555.56

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Solution

The fourth proportional to 609, 912.94 and 555.56 is: 832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    609 : 912.94 = 555.56 : x
  2. Step 2: Convert to fraction form
    609/912.94 = 555.56/x
  3. Step 3: Cross multiply
    609x = 912.94 × 555.56
  4. Step 4: Simplify right side
    609x = 507,192.95
  5. Step 5: Solve for x
    x = 507,192.95/609
  6. Step 6: Final answer
    x = 832.83

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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.