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Finding the Fourth Proportional to 784.90, 1,083.06 and 435.52

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Solution

The fourth proportional to 784.90, 1,083.06 and 435.52 is: 600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.90 : 1,083.06 = 435.52 : x
  2. Step 2: Convert to fraction form
    784.90/1,083.06 = 435.52/x
  3. Step 3: Cross multiply
    784.90x = 1,083.06 × 435.52
  4. Step 4: Simplify right side
    784.90x = 471,694.29
  5. Step 5: Solve for x
    x = 471,694.29/784.90
  6. Step 6: Final answer
    x = 600.96

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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.