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Finding the Fourth Proportional to 641.70, 957.62 and 572.48

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Solution

The fourth proportional to 641.70, 957.62 and 572.48 is: 854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.70 : 957.62 = 572.48 : x
  2. Step 2: Convert to fraction form
    641.70/957.62 = 572.48/x
  3. Step 3: Cross multiply
    641.70x = 957.62 × 572.48
  4. Step 4: Simplify right side
    641.70x = 548,218.30
  5. Step 5: Solve for x
    x = 548,218.30/641.70
  6. Step 6: Final answer
    x = 854.32

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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.