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Finding the Fourth Proportional to 444.14, 612.65 and 288.89

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Solution

The fourth proportional to 444.14, 612.65 and 288.89 is: 398.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.14 : 612.65 = 288.89 : x
  2. Step 2: Convert to fraction form
    444.14/612.65 = 288.89/x
  3. Step 3: Cross multiply
    444.14x = 612.65 × 288.89
  4. Step 4: Simplify right side
    444.14x = 176,986.12
  5. Step 5: Solve for x
    x = 176,986.12/444.14
  6. Step 6: Final answer
    x = 398.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.