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Finding the Fourth Proportional to 641.44, 957.16 and 572.49

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Solution

The fourth proportional to 641.44, 957.16 and 572.49 is: 854.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.44 : 957.16 = 572.49 : x
  2. Step 2: Convert to fraction form
    641.44/957.16 = 572.49/x
  3. Step 3: Cross multiply
    641.44x = 957.16 × 572.49
  4. Step 4: Simplify right side
    641.44x = 547,964.53
  5. Step 5: Solve for x
    x = 547,964.53/641.44
  6. Step 6: Final answer
    x = 854.27

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Double scale
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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.