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Finding the Fourth Proportional to 607.72, 911.86 and 376.88

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Solution

The fourth proportional to 607.72, 911.86 and 376.88 is: 565.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.72 : 911.86 = 376.88 : x
  2. Step 2: Convert to fraction form
    607.72/911.86 = 376.88/x
  3. Step 3: Cross multiply
    607.72x = 911.86 × 376.88
  4. Step 4: Simplify right side
    607.72x = 343,661.80
  5. Step 5: Solve for x
    x = 343,661.80/607.72
  6. Step 6: Final answer
    x = 565.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.