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Finding the Fourth Proportional to 1,146.95, 1,582.80 and 622.99

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Solution

The fourth proportional to 1,146.95, 1,582.80 and 622.99 is: 859.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.95 : 1,582.80 = 622.99 : x
  2. Step 2: Convert to fraction form
    1,146.95/1,582.80 = 622.99/x
  3. Step 3: Cross multiply
    1,146.95x = 1,582.80 × 622.99
  4. Step 4: Simplify right side
    1,146.95x = 986,068.57
  5. Step 5: Solve for x
    x = 986,068.57/1,146.95
  6. Step 6: Final answer
    x = 859.73

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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.