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Finding the Fourth Proportional to 480.85, 717.49 and 476.20

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Solution

The fourth proportional to 480.85, 717.49 and 476.20 is: 710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.85 : 717.49 = 476.20 : x
  2. Step 2: Convert to fraction form
    480.85/717.49 = 476.20/x
  3. Step 3: Cross multiply
    480.85x = 717.49 × 476.20
  4. Step 4: Simplify right side
    480.85x = 341,666.19
  5. Step 5: Solve for x
    x = 341,666.19/480.85
  6. Step 6: Final answer
    x = 710.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.