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Finding the Fourth Proportional to 1,345.09, 1,857.14 and 951.43

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Solution

The fourth proportional to 1,345.09, 1,857.14 and 951.43 is: 1,313.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.09 : 1,857.14 = 951.43 : x
  2. Step 2: Convert to fraction form
    1,345.09/1,857.14 = 951.43/x
  3. Step 3: Cross multiply
    1,345.09x = 1,857.14 × 951.43
  4. Step 4: Simplify right side
    1,345.09x = 1,766,938.71
  5. Step 5: Solve for x
    x = 1,766,938.71/1,345.09
  6. Step 6: Final answer
    x = 1,313.62

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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.