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Finding the Fourth Proportional to 442.95, 608.52 and 396.93

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Solution

The fourth proportional to 442.95, 608.52 and 396.93 is: 545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.95 : 608.52 = 396.93 : x
  2. Step 2: Convert to fraction form
    442.95/608.52 = 396.93/x
  3. Step 3: Cross multiply
    442.95x = 608.52 × 396.93
  4. Step 4: Simplify right side
    442.95x = 241,539.84
  5. Step 5: Solve for x
    x = 241,539.84/442.95
  6. Step 6: Final answer
    x = 545.30

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.