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Finding the Fourth Proportional to 1,307.41, 1,960.78 and 441.71

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Solution

The fourth proportional to 1,307.41, 1,960.78 and 441.71 is: 662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.41 : 1,960.78 = 441.71 : x
  2. Step 2: Convert to fraction form
    1,307.41/1,960.78 = 441.71/x
  3. Step 3: Cross multiply
    1,307.41x = 1,960.78 × 441.71
  4. Step 4: Simplify right side
    1,307.41x = 866,096.13
  5. Step 5: Solve for x
    x = 866,096.13/1,307.41
  6. Step 6: Final answer
    x = 662.45

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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.