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Finding the Fourth Proportional to 1,023.36, 1,535.04 and 615.39

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Solution

The fourth proportional to 1,023.36, 1,535.04 and 615.39 is: 923.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.36 : 1,535.04 = 615.39 : x
  2. Step 2: Convert to fraction form
    1,023.36/1,535.04 = 615.39/x
  3. Step 3: Cross multiply
    1,023.36x = 1,535.04 × 615.39
  4. Step 4: Simplify right side
    1,023.36x = 944,648.27
  5. Step 5: Solve for x
    x = 944,648.27/1,023.36
  6. Step 6: Final answer
    x = 923.09

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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.