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Finding the Fourth Proportional to 479.55, 719.31 and 263.07

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Solution

The fourth proportional to 479.55, 719.31 and 263.07 is: 394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.55 : 719.31 = 263.07 : x
  2. Step 2: Convert to fraction form
    479.55/719.31 = 263.07/x
  3. Step 3: Cross multiply
    479.55x = 719.31 × 263.07
  4. Step 4: Simplify right side
    479.55x = 189,228.88
  5. Step 5: Solve for x
    x = 189,228.88/479.55
  6. Step 6: Final answer
    x = 394.60

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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.