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Finding the Fourth Proportional to 1,622.78, 2,239.65 and 924.02

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Solution

The fourth proportional to 1,622.78, 2,239.65 and 924.02 is: 1,275.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.78 : 2,239.65 = 924.02 : x
  2. Step 2: Convert to fraction form
    1,622.78/2,239.65 = 924.02/x
  3. Step 3: Cross multiply
    1,622.78x = 2,239.65 × 924.02
  4. Step 4: Simplify right side
    1,622.78x = 2,069,481.39
  5. Step 5: Solve for x
    x = 2,069,481.39/1,622.78
  6. Step 6: Final answer
    x = 1,275.27

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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.