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Finding the Fourth Proportional to 580.07, 800.46 and 318.03

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Solution

The fourth proportional to 580.07, 800.46 and 318.03 is: 438.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.07 : 800.46 = 318.03 : x
  2. Step 2: Convert to fraction form
    580.07/800.46 = 318.03/x
  3. Step 3: Cross multiply
    580.07x = 800.46 × 318.03
  4. Step 4: Simplify right side
    580.07x = 254,570.29
  5. Step 5: Solve for x
    x = 254,570.29/580.07
  6. Step 6: Final answer
    x = 438.86

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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.