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Finding the Fourth Proportional to 869.03, 1,302.53 and 479.27

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Solution

The fourth proportional to 869.03, 1,302.53 and 479.27 is: 718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.03 : 1,302.53 = 479.27 : x
  2. Step 2: Convert to fraction form
    869.03/1,302.53 = 479.27/x
  3. Step 3: Cross multiply
    869.03x = 1,302.53 × 479.27
  4. Step 4: Simplify right side
    869.03x = 624,259.78
  5. Step 5: Solve for x
    x = 624,259.78/869.03
  6. Step 6: Final answer
    x = 718.34

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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.