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Finding the Fourth Proportional to 768.46, 1,151.65 and 562.06

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Solution

The fourth proportional to 768.46, 1,151.65 and 562.06 is: 842.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.46 : 1,151.65 = 562.06 : x
  2. Step 2: Convert to fraction form
    768.46/1,151.65 = 562.06/x
  3. Step 3: Cross multiply
    768.46x = 1,151.65 × 562.06
  4. Step 4: Simplify right side
    768.46x = 647,296.40
  5. Step 5: Solve for x
    x = 647,296.40/768.46
  6. Step 6: Final answer
    x = 842.33

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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.