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Finding the Fourth Proportional to 563.44, 840.18 and 558.56

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Solution

The fourth proportional to 563.44, 840.18 and 558.56 is: 832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.44 : 840.18 = 558.56 : x
  2. Step 2: Convert to fraction form
    563.44/840.18 = 558.56/x
  3. Step 3: Cross multiply
    563.44x = 840.18 × 558.56
  4. Step 4: Simplify right side
    563.44x = 469,290.94
  5. Step 5: Solve for x
    x = 469,290.94/563.44
  6. Step 6: Final answer
    x = 832.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.