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Finding the Fourth Proportional to 609.98, 840.29 and 573.53

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Solution

The fourth proportional to 609.98, 840.29 and 573.53 is: 790.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.98 : 840.29 = 573.53 : x
  2. Step 2: Convert to fraction form
    609.98/840.29 = 573.53/x
  3. Step 3: Cross multiply
    609.98x = 840.29 × 573.53
  4. Step 4: Simplify right side
    609.98x = 481,924.45
  5. Step 5: Solve for x
    x = 481,924.45/609.98
  6. Step 6: Final answer
    x = 790.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.