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Finding the Fourth Proportional to 509.04, 701.72 and 450.80

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Solution

The fourth proportional to 509.04, 701.72 and 450.80 is: 621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.04 : 701.72 = 450.80 : x
  2. Step 2: Convert to fraction form
    509.04/701.72 = 450.80/x
  3. Step 3: Cross multiply
    509.04x = 701.72 × 450.80
  4. Step 4: Simplify right side
    509.04x = 316,335.38
  5. Step 5: Solve for x
    x = 316,335.38/509.04
  6. Step 6: Final answer
    x = 621.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.