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Finding the Fourth Proportional to 444.77, 613.86 and 431.09

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Solution

The fourth proportional to 444.77, 613.86 and 431.09 is: 594.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.77 : 613.86 = 431.09 : x
  2. Step 2: Convert to fraction form
    444.77/613.86 = 431.09/x
  3. Step 3: Cross multiply
    444.77x = 613.86 × 431.09
  4. Step 4: Simplify right side
    444.77x = 264,628.95
  5. Step 5: Solve for x
    x = 264,628.95/444.77
  6. Step 6: Final answer
    x = 594.98

Related Problems

Find fourth proportional to 222.38, 306.93 and 215.54
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Double scale
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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.