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Finding the Fourth Proportional to 1,528.13, 2,292.20 and 662.38

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Solution

The fourth proportional to 1,528.13, 2,292.20 and 662.38 is: 993.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.13 : 2,292.20 = 662.38 : x
  2. Step 2: Convert to fraction form
    1,528.13/2,292.20 = 662.38/x
  3. Step 3: Cross multiply
    1,528.13x = 2,292.20 × 662.38
  4. Step 4: Simplify right side
    1,528.13x = 1,518,292.66
  5. Step 5: Solve for x
    x = 1,518,292.66/1,528.13
  6. Step 6: Final answer
    x = 993.56

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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.