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Finding the Fourth Proportional to 479.85, 719.16 and 262.98

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Solution

The fourth proportional to 479.85, 719.16 and 262.98 is: 394.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.85 : 719.16 = 262.98 : x
  2. Step 2: Convert to fraction form
    479.85/719.16 = 262.98/x
  3. Step 3: Cross multiply
    479.85x = 719.16 × 262.98
  4. Step 4: Simplify right side
    479.85x = 189,124.70
  5. Step 5: Solve for x
    x = 189,124.70/479.85
  6. Step 6: Final answer
    x = 394.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.