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Finding the Fourth Proportional to 554.36, 768.66 and 525.20

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Solution

The fourth proportional to 554.36, 768.66 and 525.20 is: 728.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.36 : 768.66 = 525.20 : x
  2. Step 2: Convert to fraction form
    554.36/768.66 = 525.20/x
  3. Step 3: Cross multiply
    554.36x = 768.66 × 525.20
  4. Step 4: Simplify right side
    554.36x = 403,700.23
  5. Step 5: Solve for x
    x = 403,700.23/554.36
  6. Step 6: Final answer
    x = 728.23

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.