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Finding the Fourth Proportional to 844.20, 1,165.52 and 545.60

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Solution

The fourth proportional to 844.20, 1,165.52 and 545.60 is: 753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.20 : 1,165.52 = 545.60 : x
  2. Step 2: Convert to fraction form
    844.20/1,165.52 = 545.60/x
  3. Step 3: Cross multiply
    844.20x = 1,165.52 × 545.60
  4. Step 4: Simplify right side
    844.20x = 635,911.99
  5. Step 5: Solve for x
    x = 635,911.99/844.20
  6. Step 6: Final answer
    x = 753.27

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1.5x scale

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.