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Finding the Fourth Proportional to 480.59, 719.63 and 440.49

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Solution

The fourth proportional to 480.59, 719.63 and 440.49 is: 659.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.59 : 719.63 = 440.49 : x
  2. Step 2: Convert to fraction form
    480.59/719.63 = 440.49/x
  3. Step 3: Cross multiply
    480.59x = 719.63 × 440.49
  4. Step 4: Simplify right side
    480.59x = 316,989.82
  5. Step 5: Solve for x
    x = 316,989.82/480.59
  6. Step 6: Final answer
    x = 659.58

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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.