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Finding the Fourth Proportional to 454.08, 624.96 and 388.32

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Solution

The fourth proportional to 454.08, 624.96 and 388.32 is: 534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.08 : 624.96 = 388.32 : x
  2. Step 2: Convert to fraction form
    454.08/624.96 = 388.32/x
  3. Step 3: Cross multiply
    454.08x = 624.96 × 388.32
  4. Step 4: Simplify right side
    454.08x = 242,684.47
  5. Step 5: Solve for x
    x = 242,684.47/454.08
  6. Step 6: Final answer
    x = 534.45

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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.