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Finding the Fourth Proportional to 758.12, 1,046.68 and 522.45

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Solution

The fourth proportional to 758.12, 1,046.68 and 522.45 is: 721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.12 : 1,046.68 = 522.45 : x
  2. Step 2: Convert to fraction form
    758.12/1,046.68 = 522.45/x
  3. Step 3: Cross multiply
    758.12x = 1,046.68 × 522.45
  4. Step 4: Simplify right side
    758.12x = 546,836.66
  5. Step 5: Solve for x
    x = 546,836.66/758.12
  6. Step 6: Final answer
    x = 721.31

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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.