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Finding the Fourth Proportional to 444.07, 665.39 and 313.76

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Solution

The fourth proportional to 444.07, 665.39 and 313.76 is: 470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.07 : 665.39 = 313.76 : x
  2. Step 2: Convert to fraction form
    444.07/665.39 = 313.76/x
  3. Step 3: Cross multiply
    444.07x = 665.39 × 313.76
  4. Step 4: Simplify right side
    444.07x = 208,772.77
  5. Step 5: Solve for x
    x = 208,772.77/444.07
  6. Step 6: Final answer
    x = 470.13

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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.