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Finding the Fourth Proportional to 743.83, 1,025.51 and 610.56

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Solution

The fourth proportional to 743.83, 1,025.51 and 610.56 is: 841.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.83 : 1,025.51 = 610.56 : x
  2. Step 2: Convert to fraction form
    743.83/1,025.51 = 610.56/x
  3. Step 3: Cross multiply
    743.83x = 1,025.51 × 610.56
  4. Step 4: Simplify right side
    743.83x = 626,132.33
  5. Step 5: Solve for x
    x = 626,132.33/743.83
  6. Step 6: Final answer
    x = 841.77

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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.