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Finding the Fourth Proportional to 554.75, 832.43 and 208.32

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Solution

The fourth proportional to 554.75, 832.43 and 208.32 is: 312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.75 : 832.43 = 208.32 : x
  2. Step 2: Convert to fraction form
    554.75/832.43 = 208.32/x
  3. Step 3: Cross multiply
    554.75x = 832.43 × 208.32
  4. Step 4: Simplify right side
    554.75x = 173,410.78
  5. Step 5: Solve for x
    x = 173,410.78/554.75
  6. Step 6: Final answer
    x = 312.60

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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.