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Finding the Fourth Proportional to 442.50, 662.54 and 305.84

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Solution

The fourth proportional to 442.50, 662.54 and 305.84 is: 457.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.50 : 662.54 = 305.84 : x
  2. Step 2: Convert to fraction form
    442.50/662.54 = 305.84/x
  3. Step 3: Cross multiply
    442.50x = 662.54 × 305.84
  4. Step 4: Simplify right side
    442.50x = 202,631.23
  5. Step 5: Solve for x
    x = 202,631.23/442.50
  6. Step 6: Final answer
    x = 457.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.