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Finding the Fourth Proportional to 841.73, 1,160.98 and 649.39

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Solution

The fourth proportional to 841.73, 1,160.98 and 649.39 is: 895.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.73 : 1,160.98 = 649.39 : x
  2. Step 2: Convert to fraction form
    841.73/1,160.98 = 649.39/x
  3. Step 3: Cross multiply
    841.73x = 1,160.98 × 649.39
  4. Step 4: Simplify right side
    841.73x = 753,928.80
  5. Step 5: Solve for x
    x = 753,928.80/841.73
  6. Step 6: Final answer
    x = 895.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.