Home / 1,433.12-2,148.92-458.96

Finding the Fourth Proportional to 1,433.12, 2,148.92 and 458.96

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Solution

The fourth proportional to 1,433.12, 2,148.92 and 458.96 is: 688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.12 : 2,148.92 = 458.96 : x
  2. Step 2: Convert to fraction form
    1,433.12/2,148.92 = 458.96/x
  3. Step 3: Cross multiply
    1,433.12x = 2,148.92 × 458.96
  4. Step 4: Simplify right side
    1,433.12x = 986,268.32
  5. Step 5: Solve for x
    x = 986,268.32/1,433.12
  6. Step 6: Final answer
    x = 688.20

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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.