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Finding the Fourth Proportional to 558.63, 771.12 and 412.44

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Solution

The fourth proportional to 558.63, 771.12 and 412.44 is: 569.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.63 : 771.12 = 412.44 : x
  2. Step 2: Convert to fraction form
    558.63/771.12 = 412.44/x
  3. Step 3: Cross multiply
    558.63x = 771.12 × 412.44
  4. Step 4: Simplify right side
    558.63x = 318,040.73
  5. Step 5: Solve for x
    x = 318,040.73/558.63
  6. Step 6: Final answer
    x = 569.32

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1.5x scale

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.