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Finding the Fourth Proportional to 1,725.39, 2,587.73 and 492.47

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Solution

The fourth proportional to 1,725.39, 2,587.73 and 492.47 is: 738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.39 : 2,587.73 = 492.47 : x
  2. Step 2: Convert to fraction form
    1,725.39/2,587.73 = 492.47/x
  3. Step 3: Cross multiply
    1,725.39x = 2,587.73 × 492.47
  4. Step 4: Simplify right side
    1,725.39x = 1,274,383.74
  5. Step 5: Solve for x
    x = 1,274,383.74/1,725.39
  6. Step 6: Final answer
    x = 738.60

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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.