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Finding the Fourth Proportional to 842.64, 1,162.56 and 510.96

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Solution

The fourth proportional to 842.64, 1,162.56 and 510.96 is: 704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.64 : 1,162.56 = 510.96 : x
  2. Step 2: Convert to fraction form
    842.64/1,162.56 = 510.96/x
  3. Step 3: Cross multiply
    842.64x = 1,162.56 × 510.96
  4. Step 4: Simplify right side
    842.64x = 594,021.66
  5. Step 5: Solve for x
    x = 594,021.66/842.64
  6. Step 6: Final answer
    x = 704.95

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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.