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Finding the Fourth Proportional to 706.11, 1,058.95 and 432.33

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Solution

The fourth proportional to 706.11, 1,058.95 and 432.33 is: 648.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.11 : 1,058.95 = 432.33 : x
  2. Step 2: Convert to fraction form
    706.11/1,058.95 = 432.33/x
  3. Step 3: Cross multiply
    706.11x = 1,058.95 × 432.33
  4. Step 4: Simplify right side
    706.11x = 457,815.85
  5. Step 5: Solve for x
    x = 457,815.85/706.11
  6. Step 6: Final answer
    x = 648.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.