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Finding the Fourth Proportional to 469.98, 704.91 and 145.34

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Solution

The fourth proportional to 469.98, 704.91 and 145.34 is: 217.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.98 : 704.91 = 145.34 : x
  2. Step 2: Convert to fraction form
    469.98/704.91 = 145.34/x
  3. Step 3: Cross multiply
    469.98x = 704.91 × 145.34
  4. Step 4: Simplify right side
    469.98x = 102,451.62
  5. Step 5: Solve for x
    x = 102,451.62/469.98
  6. Step 6: Final answer
    x = 217.99

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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.