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Finding the Fourth Proportional to 607.91, 911.51 and 477.59

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Solution

The fourth proportional to 607.91, 911.51 and 477.59 is: 716.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.91 : 911.51 = 477.59 : x
  2. Step 2: Convert to fraction form
    607.91/911.51 = 477.59/x
  3. Step 3: Cross multiply
    607.91x = 911.51 × 477.59
  4. Step 4: Simplify right side
    607.91x = 435,329.74
  5. Step 5: Solve for x
    x = 435,329.74/607.91
  6. Step 6: Final answer
    x = 716.11

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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.