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Finding the Fourth Proportional to 508.56, 766.49 and 480.30

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Solution

The fourth proportional to 508.56, 766.49 and 480.30 is: 723.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.56 : 766.49 = 480.30 : x
  2. Step 2: Convert to fraction form
    508.56/766.49 = 480.30/x
  3. Step 3: Cross multiply
    508.56x = 766.49 × 480.30
  4. Step 4: Simplify right side
    508.56x = 368,145.15
  5. Step 5: Solve for x
    x = 368,145.15/508.56
  6. Step 6: Final answer
    x = 723.90

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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.