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Finding the Fourth Proportional to 824.03, 1,136.27 and 625.22

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Solution

The fourth proportional to 824.03, 1,136.27 and 625.22 is: 862.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.03 : 1,136.27 = 625.22 : x
  2. Step 2: Convert to fraction form
    824.03/1,136.27 = 625.22/x
  3. Step 3: Cross multiply
    824.03x = 1,136.27 × 625.22
  4. Step 4: Simplify right side
    824.03x = 710,421.75
  5. Step 5: Solve for x
    x = 710,421.75/824.03
  6. Step 6: Final answer
    x = 862.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.