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Finding the Fourth Proportional to 1,953.45, 2,930.10 and 492.63

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Solution

The fourth proportional to 1,953.45, 2,930.10 and 492.63 is: 738.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.45 : 2,930.10 = 492.63 : x
  2. Step 2: Convert to fraction form
    1,953.45/2,930.10 = 492.63/x
  3. Step 3: Cross multiply
    1,953.45x = 2,930.10 × 492.63
  4. Step 4: Simplify right side
    1,953.45x = 1,443,455.16
  5. Step 5: Solve for x
    x = 1,443,455.16/1,953.45
  6. Step 6: Final answer
    x = 738.93

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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.