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Finding the Fourth Proportional to 1,342.36, 2,010.30 and 763.48

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Solution

The fourth proportional to 1,342.36, 2,010.30 and 763.48 is: 1,143.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.36 : 2,010.30 = 763.48 : x
  2. Step 2: Convert to fraction form
    1,342.36/2,010.30 = 763.48/x
  3. Step 3: Cross multiply
    1,342.36x = 2,010.30 × 763.48
  4. Step 4: Simplify right side
    1,342.36x = 1,534,823.84
  5. Step 5: Solve for x
    x = 1,534,823.84/1,342.36
  6. Step 6: Final answer
    x = 1,143.38

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1.5x scale

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.