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Finding the Fourth Proportional to 835.47, 1,253.23 and 712.96

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Solution

The fourth proportional to 835.47, 1,253.23 and 712.96 is: 1,069.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.47 : 1,253.23 = 712.96 : x
  2. Step 2: Convert to fraction form
    835.47/1,253.23 = 712.96/x
  3. Step 3: Cross multiply
    835.47x = 1,253.23 × 712.96
  4. Step 4: Simplify right side
    835.47x = 893,502.86
  5. Step 5: Solve for x
    x = 893,502.86/835.47
  6. Step 6: Final answer
    x = 1,069.46

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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.