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Finding the Fourth Proportional to 559.51, 771.73 and 372.90

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Solution

The fourth proportional to 559.51, 771.73 and 372.90 is: 514.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.51 : 771.73 = 372.90 : x
  2. Step 2: Convert to fraction form
    559.51/771.73 = 372.90/x
  3. Step 3: Cross multiply
    559.51x = 771.73 × 372.90
  4. Step 4: Simplify right side
    559.51x = 287,780.08
  5. Step 5: Solve for x
    x = 287,780.08/559.51
  6. Step 6: Final answer
    x = 514.35

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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.