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Finding the Fourth Proportional to 641.49, 962.57 and 630.05

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Solution

The fourth proportional to 641.49, 962.57 and 630.05 is: 945.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.49 : 962.57 = 630.05 : x
  2. Step 2: Convert to fraction form
    641.49/962.57 = 630.05/x
  3. Step 3: Cross multiply
    641.49x = 962.57 × 630.05
  4. Step 4: Simplify right side
    641.49x = 606,463.99
  5. Step 5: Solve for x
    x = 606,463.99/641.49
  6. Step 6: Final answer
    x = 945.40

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Half scale
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Double scale
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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.