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Finding the Fourth Proportional to 548.32, 821.26 and 474.20

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Solution

The fourth proportional to 548.32, 821.26 and 474.20 is: 710.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.32 : 821.26 = 474.20 : x
  2. Step 2: Convert to fraction form
    548.32/821.26 = 474.20/x
  3. Step 3: Cross multiply
    548.32x = 821.26 × 474.20
  4. Step 4: Simplify right side
    548.32x = 389,441.49
  5. Step 5: Solve for x
    x = 389,441.49/548.32
  6. Step 6: Final answer
    x = 710.24

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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.