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Finding the Fourth Proportional to 551.31, 830.24 and 480.03

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Solution

The fourth proportional to 551.31, 830.24 and 480.03 is: 722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.31 : 830.24 = 480.03 : x
  2. Step 2: Convert to fraction form
    551.31/830.24 = 480.03/x
  3. Step 3: Cross multiply
    551.31x = 830.24 × 480.03
  4. Step 4: Simplify right side
    551.31x = 398,541.31
  5. Step 5: Solve for x
    x = 398,541.31/551.31
  6. Step 6: Final answer
    x = 722.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.