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Finding the Fourth Proportional to 1,323.04, 1,983.28 and 500.76

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Solution

The fourth proportional to 1,323.04, 1,983.28 and 500.76 is: 750.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.04 : 1,983.28 = 500.76 : x
  2. Step 2: Convert to fraction form
    1,323.04/1,983.28 = 500.76/x
  3. Step 3: Cross multiply
    1,323.04x = 1,983.28 × 500.76
  4. Step 4: Simplify right side
    1,323.04x = 993,147.29
  5. Step 5: Solve for x
    x = 993,147.29/1,323.04
  6. Step 6: Final answer
    x = 750.66

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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.