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Finding the Fourth Proportional to 867.08, 1,298.43 and 558.96

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Solution

The fourth proportional to 867.08, 1,298.43 and 558.96 is: 837.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.08 : 1,298.43 = 558.96 : x
  2. Step 2: Convert to fraction form
    867.08/1,298.43 = 558.96/x
  3. Step 3: Cross multiply
    867.08x = 1,298.43 × 558.96
  4. Step 4: Simplify right side
    867.08x = 725,770.43
  5. Step 5: Solve for x
    x = 725,770.43/867.08
  6. Step 6: Final answer
    x = 837.03

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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.