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Finding the Fourth Proportional to 1,273.31, 1,760.70 and 1,010.87

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Solution

The fourth proportional to 1,273.31, 1,760.70 and 1,010.87 is: 1,397.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.31 : 1,760.70 = 1,010.87 : x
  2. Step 2: Convert to fraction form
    1,273.31/1,760.70 = 1,010.87/x
  3. Step 3: Cross multiply
    1,273.31x = 1,760.70 × 1,010.87
  4. Step 4: Simplify right side
    1,273.31x = 1,779,838.81
  5. Step 5: Solve for x
    x = 1,779,838.81/1,273.31
  6. Step 6: Final answer
    x = 1,397.80

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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.