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Finding the Fourth Proportional to 1,146.45, 1,582.10 and 622.49

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Solution

The fourth proportional to 1,146.45, 1,582.10 and 622.49 is: 859.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.45 : 1,582.10 = 622.49 : x
  2. Step 2: Convert to fraction form
    1,146.45/1,582.10 = 622.49/x
  3. Step 3: Cross multiply
    1,146.45x = 1,582.10 × 622.49
  4. Step 4: Simplify right side
    1,146.45x = 984,832.74
  5. Step 5: Solve for x
    x = 984,832.74/1,146.45
  6. Step 6: Final answer
    x = 859.03

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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.