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Finding the Fourth Proportional to 505.23, 758.45 and 322.98

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Solution

The fourth proportional to 505.23, 758.45 and 322.98 is: 484.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.23 : 758.45 = 322.98 : x
  2. Step 2: Convert to fraction form
    505.23/758.45 = 322.98/x
  3. Step 3: Cross multiply
    505.23x = 758.45 × 322.98
  4. Step 4: Simplify right side
    505.23x = 244,964.18
  5. Step 5: Solve for x
    x = 244,964.18/505.23
  6. Step 6: Final answer
    x = 484.86

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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.