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Finding the Fourth Proportional to 641.62, 957.25 and 572.37

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Solution

The fourth proportional to 641.62, 957.25 and 572.37 is: 853.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.62 : 957.25 = 572.37 : x
  2. Step 2: Convert to fraction form
    641.62/957.25 = 572.37/x
  3. Step 3: Cross multiply
    641.62x = 957.25 × 572.37
  4. Step 4: Simplify right side
    641.62x = 547,901.18
  5. Step 5: Solve for x
    x = 547,901.18/641.62
  6. Step 6: Final answer
    x = 853.93

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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.