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Finding the Fourth Proportional to 1,953.76, 2,930.40 and 492.82

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Solution

The fourth proportional to 1,953.76, 2,930.40 and 492.82 is: 739.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.76 : 2,930.40 = 492.82 : x
  2. Step 2: Convert to fraction form
    1,953.76/2,930.40 = 492.82/x
  3. Step 3: Cross multiply
    1,953.76x = 2,930.40 × 492.82
  4. Step 4: Simplify right side
    1,953.76x = 1,444,159.73
  5. Step 5: Solve for x
    x = 1,444,159.73/1,953.76
  6. Step 6: Final answer
    x = 739.17

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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.