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Finding the Fourth Proportional to 480.34, 662.36 and 356.24

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Solution

The fourth proportional to 480.34, 662.36 and 356.24 is: 491.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.34 : 662.36 = 356.24 : x
  2. Step 2: Convert to fraction form
    480.34/662.36 = 356.24/x
  3. Step 3: Cross multiply
    480.34x = 662.36 × 356.24
  4. Step 4: Simplify right side
    480.34x = 235,959.13
  5. Step 5: Solve for x
    x = 235,959.13/480.34
  6. Step 6: Final answer
    x = 491.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.