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Finding the Fourth Proportional to 485.62, 670.26 and 359.98

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Solution

The fourth proportional to 485.62, 670.26 and 359.98 is: 496.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.62 : 670.26 = 359.98 : x
  2. Step 2: Convert to fraction form
    485.62/670.26 = 359.98/x
  3. Step 3: Cross multiply
    485.62x = 670.26 × 359.98
  4. Step 4: Simplify right side
    485.62x = 241,280.19
  5. Step 5: Solve for x
    x = 241,280.19/485.62
  6. Step 6: Final answer
    x = 496.85

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