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Finding the Fourth Proportional to 841.04, 1,161.74 and 646.96

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Solution

The fourth proportional to 841.04, 1,161.74 and 646.96 is: 893.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.04 : 1,161.74 = 646.96 : x
  2. Step 2: Convert to fraction form
    841.04/1,161.74 = 646.96/x
  3. Step 3: Cross multiply
    841.04x = 1,161.74 × 646.96
  4. Step 4: Simplify right side
    841.04x = 751,599.31
  5. Step 5: Solve for x
    x = 751,599.31/841.04
  6. Step 6: Final answer
    x = 893.65

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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.