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Finding the Fourth Proportional to 505.50, 753.23 and 450.99

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Solution

The fourth proportional to 505.50, 753.23 and 450.99 is: 672.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.50 : 753.23 = 450.99 : x
  2. Step 2: Convert to fraction form
    505.50/753.23 = 450.99/x
  3. Step 3: Cross multiply
    505.50x = 753.23 × 450.99
  4. Step 4: Simplify right side
    505.50x = 339,696.94
  5. Step 5: Solve for x
    x = 339,696.94/505.50
  6. Step 6: Final answer
    x = 672.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.