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Finding the Fourth Proportional to 743.56, 1,025.94 and 511

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Solution

The fourth proportional to 743.56, 1,025.94 and 511 is: 705.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.56 : 1,025.94 = 511 : x
  2. Step 2: Convert to fraction form
    743.56/1,025.94 = 511/x
  3. Step 3: Cross multiply
    743.56x = 1,025.94 × 511
  4. Step 4: Simplify right side
    743.56x = 524,255.34
  5. Step 5: Solve for x
    x = 524,255.34/743.56
  6. Step 6: Final answer
    x = 705.06

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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.