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Finding the Fourth Proportional to 865.72, 1,298.58 and 601.96

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Solution

The fourth proportional to 865.72, 1,298.58 and 601.96 is: 902.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.72 : 1,298.58 = 601.96 : x
  2. Step 2: Convert to fraction form
    865.72/1,298.58 = 601.96/x
  3. Step 3: Cross multiply
    865.72x = 1,298.58 × 601.96
  4. Step 4: Simplify right side
    865.72x = 781,693.22
  5. Step 5: Solve for x
    x = 781,693.22/865.72
  6. Step 6: Final answer
    x = 902.94

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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.