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Finding the Fourth Proportional to 647.46, 970.86 and 236.49

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Solution

The fourth proportional to 647.46, 970.86 and 236.49 is: 354.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.46 : 970.86 = 236.49 : x
  2. Step 2: Convert to fraction form
    647.46/970.86 = 236.49/x
  3. Step 3: Cross multiply
    647.46x = 970.86 × 236.49
  4. Step 4: Simplify right side
    647.46x = 229,598.68
  5. Step 5: Solve for x
    x = 229,598.68/647.46
  6. Step 6: Final answer
    x = 354.61

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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.