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Finding the Fourth Proportional to 450.04, 619.49 and 388.08

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Solution

The fourth proportional to 450.04, 619.49 and 388.08 is: 534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.04 : 619.49 = 388.08 : x
  2. Step 2: Convert to fraction form
    450.04/619.49 = 388.08/x
  3. Step 3: Cross multiply
    450.04x = 619.49 × 388.08
  4. Step 4: Simplify right side
    450.04x = 240,411.68
  5. Step 5: Solve for x
    x = 240,411.68/450.04
  6. Step 6: Final answer
    x = 534.20

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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.