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Finding the Fourth Proportional to 582.45, 874.62 and 553.22

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Solution

The fourth proportional to 582.45, 874.62 and 553.22 is: 830.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.45 : 874.62 = 553.22 : x
  2. Step 2: Convert to fraction form
    582.45/874.62 = 553.22/x
  3. Step 3: Cross multiply
    582.45x = 874.62 × 553.22
  4. Step 4: Simplify right side
    582.45x = 483,857.28
  5. Step 5: Solve for x
    x = 483,857.28/582.45
  6. Step 6: Final answer
    x = 830.73

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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.