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Finding the Fourth Proportional to 673.31, 929.21 and 411.35

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Solution

The fourth proportional to 673.31, 929.21 and 411.35 is: 567.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.31 : 929.21 = 411.35 : x
  2. Step 2: Convert to fraction form
    673.31/929.21 = 411.35/x
  3. Step 3: Cross multiply
    673.31x = 929.21 × 411.35
  4. Step 4: Simplify right side
    673.31x = 382,223.83
  5. Step 5: Solve for x
    x = 382,223.83/673.31
  6. Step 6: Final answer
    x = 567.68

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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.