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Finding the Fourth Proportional to 845.71, 1,270.69 and 537.71

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Solution

The fourth proportional to 845.71, 1,270.69 and 537.71 is: 807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.71 : 1,270.69 = 537.71 : x
  2. Step 2: Convert to fraction form
    845.71/1,270.69 = 537.71/x
  3. Step 3: Cross multiply
    845.71x = 1,270.69 × 537.71
  4. Step 4: Simplify right side
    845.71x = 683,255.02
  5. Step 5: Solve for x
    x = 683,255.02/845.71
  6. Step 6: Final answer
    x = 807.91

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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.