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Finding the Fourth Proportional to 554.37, 830.34 and 543.30

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Solution

The fourth proportional to 554.37, 830.34 and 543.30 is: 813.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.37 : 830.34 = 543.30 : x
  2. Step 2: Convert to fraction form
    554.37/830.34 = 543.30/x
  3. Step 3: Cross multiply
    554.37x = 830.34 × 543.30
  4. Step 4: Simplify right side
    554.37x = 451,123.72
  5. Step 5: Solve for x
    x = 451,123.72/554.37
  6. Step 6: Final answer
    x = 813.76

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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.