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Finding the Fourth Proportional to 679.30, 1,014.14 and 581.83

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Solution

The fourth proportional to 679.30, 1,014.14 and 581.83 is: 868.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.30 : 1,014.14 = 581.83 : x
  2. Step 2: Convert to fraction form
    679.30/1,014.14 = 581.83/x
  3. Step 3: Cross multiply
    679.30x = 1,014.14 × 581.83
  4. Step 4: Simplify right side
    679.30x = 590,056.00
  5. Step 5: Solve for x
    x = 590,056.00/679.30
  6. Step 6: Final answer
    x = 868.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.