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Finding the Fourth Proportional to 444.81, 666.65 and 238.95

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Solution

The fourth proportional to 444.81, 666.65 and 238.95 is: 358.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.81 : 666.65 = 238.95 : x
  2. Step 2: Convert to fraction form
    444.81/666.65 = 238.95/x
  3. Step 3: Cross multiply
    444.81x = 666.65 × 238.95
  4. Step 4: Simplify right side
    444.81x = 159,294.82
  5. Step 5: Solve for x
    x = 159,294.82/444.81
  6. Step 6: Final answer
    x = 358.12

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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.