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Finding the Fourth Proportional to 714.70, 1,073.12 and 441.94

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Solution

The fourth proportional to 714.70, 1,073.12 and 441.94 is: 663.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.70 : 1,073.12 = 441.94 : x
  2. Step 2: Convert to fraction form
    714.70/1,073.12 = 441.94/x
  3. Step 3: Cross multiply
    714.70x = 1,073.12 × 441.94
  4. Step 4: Simplify right side
    714.70x = 474,254.65
  5. Step 5: Solve for x
    x = 474,254.65/714.70
  6. Step 6: Final answer
    x = 663.57

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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.