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Finding the Fourth Proportional to 1,024.04, 1,535.10 and 815.29

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Solution

The fourth proportional to 1,024.04, 1,535.10 and 815.29 is: 1,222.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024.04 : 1,535.10 = 815.29 : x
  2. Step 2: Convert to fraction form
    1,024.04/1,535.10 = 815.29/x
  3. Step 3: Cross multiply
    1,024.04x = 1,535.10 × 815.29
  4. Step 4: Simplify right side
    1,024.04x = 1,251,551.68
  5. Step 5: Solve for x
    x = 1,251,551.68/1,024.04
  6. Step 6: Final answer
    x = 1,222.17

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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.