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Finding the Fourth Proportional to 842.39, 1,162.18 and 510.69

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Solution

The fourth proportional to 842.39, 1,162.18 and 510.69 is: 704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.39 : 1,162.18 = 510.69 : x
  2. Step 2: Convert to fraction form
    842.39/1,162.18 = 510.69/x
  3. Step 3: Cross multiply
    842.39x = 1,162.18 × 510.69
  4. Step 4: Simplify right side
    842.39x = 593,513.70
  5. Step 5: Solve for x
    x = 593,513.70/842.39
  6. Step 6: Final answer
    x = 704.56

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Double scale
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1.5x scale

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.