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Finding the Fourth Proportional to 554.36, 830.61 and 245.75

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Solution

The fourth proportional to 554.36, 830.61 and 245.75 is: 368.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.36 : 830.61 = 245.75 : x
  2. Step 2: Convert to fraction form
    554.36/830.61 = 245.75/x
  3. Step 3: Cross multiply
    554.36x = 830.61 × 245.75
  4. Step 4: Simplify right side
    554.36x = 204,118.25
  5. Step 5: Solve for x
    x = 204,118.25/554.36
  6. Step 6: Final answer
    x = 368.21

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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.