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Finding the Fourth Proportional to 1,535.43, 2,303.54 and 439.87

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Solution

The fourth proportional to 1,535.43, 2,303.54 and 439.87 is: 659.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.43 : 2,303.54 = 439.87 : x
  2. Step 2: Convert to fraction form
    1,535.43/2,303.54 = 439.87/x
  3. Step 3: Cross multiply
    1,535.43x = 2,303.54 × 439.87
  4. Step 4: Simplify right side
    1,535.43x = 1,013,258.14
  5. Step 5: Solve for x
    x = 1,013,258.14/1,535.43
  6. Step 6: Final answer
    x = 659.92

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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.