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Finding the Fourth Proportional to 733.52, 1,011.35 and 621.29

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Solution

The fourth proportional to 733.52, 1,011.35 and 621.29 is: 856.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.52 : 1,011.35 = 621.29 : x
  2. Step 2: Convert to fraction form
    733.52/1,011.35 = 621.29/x
  3. Step 3: Cross multiply
    733.52x = 1,011.35 × 621.29
  4. Step 4: Simplify right side
    733.52x = 628,345.72
  5. Step 5: Solve for x
    x = 628,345.72/733.52
  6. Step 6: Final answer
    x = 856.61

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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.