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Finding the Fourth Proportional to 1,351.48, 1,864.98 and 762.04

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Solution

The fourth proportional to 1,351.48, 1,864.98 and 762.04 is: 1,051.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.48 : 1,864.98 = 762.04 : x
  2. Step 2: Convert to fraction form
    1,351.48/1,864.98 = 762.04/x
  3. Step 3: Cross multiply
    1,351.48x = 1,864.98 × 762.04
  4. Step 4: Simplify right side
    1,351.48x = 1,421,189.36
  5. Step 5: Solve for x
    x = 1,421,189.36/1,351.48
  6. Step 6: Final answer
    x = 1,051.58

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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.