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Finding the Fourth Proportional to 646.87, 970.28 and 184.61

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Solution

The fourth proportional to 646.87, 970.28 and 184.61 is: 276.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.87 : 970.28 = 184.61 : x
  2. Step 2: Convert to fraction form
    646.87/970.28 = 184.61/x
  3. Step 3: Cross multiply
    646.87x = 970.28 × 184.61
  4. Step 4: Simplify right side
    646.87x = 179,125.59
  5. Step 5: Solve for x
    x = 179,125.59/646.87
  6. Step 6: Final answer
    x = 276.91

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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.