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Finding the Fourth Proportional to 479.93, 719.15 and 325.31

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Solution

The fourth proportional to 479.93, 719.15 and 325.31 is: 487.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.93 : 719.15 = 325.31 : x
  2. Step 2: Convert to fraction form
    479.93/719.15 = 325.31/x
  3. Step 3: Cross multiply
    479.93x = 719.15 × 325.31
  4. Step 4: Simplify right side
    479.93x = 233,946.69
  5. Step 5: Solve for x
    x = 233,946.69/479.93
  6. Step 6: Final answer
    x = 487.46

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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.