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Finding the Fourth Proportional to 444.68, 612.24 and 389.36

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Solution

The fourth proportional to 444.68, 612.24 and 389.36 is: 536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.68 : 612.24 = 389.36 : x
  2. Step 2: Convert to fraction form
    444.68/612.24 = 389.36/x
  3. Step 3: Cross multiply
    444.68x = 612.24 × 389.36
  4. Step 4: Simplify right side
    444.68x = 238,381.77
  5. Step 5: Solve for x
    x = 238,381.77/444.68
  6. Step 6: Final answer
    x = 536.07

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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.