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Finding the Fourth Proportional to 641.50, 962.08 and 230.56

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Solution

The fourth proportional to 641.50, 962.08 and 230.56 is: 345.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.50 : 962.08 = 230.56 : x
  2. Step 2: Convert to fraction form
    641.50/962.08 = 230.56/x
  3. Step 3: Cross multiply
    641.50x = 962.08 × 230.56
  4. Step 4: Simplify right side
    641.50x = 221,814.18
  5. Step 5: Solve for x
    x = 221,814.18/641.50
  6. Step 6: Final answer
    x = 345.78

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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.