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Finding the Fourth Proportional to 291, 434.65 and 250

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Solution

The fourth proportional to 291, 434.65 and 250 is: 373.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    291 : 434.65 = 250 : x
  2. Step 2: Convert to fraction form
    291/434.65 = 250/x
  3. Step 3: Cross multiply
    291x = 434.65 × 250
  4. Step 4: Simplify right side
    291x = 108,662.50
  5. Step 5: Solve for x
    x = 108,662.50/291
  6. Step 6: Final answer
    x = 373.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.