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Finding the Fourth Proportional to 579.33, 800.37 and 485.91

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Solution

The fourth proportional to 579.33, 800.37 and 485.91 is: 671.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.33 : 800.37 = 485.91 : x
  2. Step 2: Convert to fraction form
    579.33/800.37 = 485.91/x
  3. Step 3: Cross multiply
    579.33x = 800.37 × 485.91
  4. Step 4: Simplify right side
    579.33x = 388,907.79
  5. Step 5: Solve for x
    x = 388,907.79/579.33
  6. Step 6: Final answer
    x = 671.31

Related Problems

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1.5x scale

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.