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Finding the Fourth Proportional to 874.34, 1,310.31 and 848.06

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Solution

The fourth proportional to 874.34, 1,310.31 and 848.06 is: 1,270.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    874.34 : 1,310.31 = 848.06 : x
  2. Step 2: Convert to fraction form
    874.34/1,310.31 = 848.06/x
  3. Step 3: Cross multiply
    874.34x = 1,310.31 × 848.06
  4. Step 4: Simplify right side
    874.34x = 1,111,221.50
  5. Step 5: Solve for x
    x = 1,111,221.50/874.34
  6. Step 6: Final answer
    x = 1,270.93

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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.