Home / 1,315.20-1,972.33-437.46

Finding the Fourth Proportional to 1,315.20, 1,972.33 and 437.46

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Solution

The fourth proportional to 1,315.20, 1,972.33 and 437.46 is: 656.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.20 : 1,972.33 = 437.46 : x
  2. Step 2: Convert to fraction form
    1,315.20/1,972.33 = 437.46/x
  3. Step 3: Cross multiply
    1,315.20x = 1,972.33 × 437.46
  4. Step 4: Simplify right side
    1,315.20x = 862,815.48
  5. Step 5: Solve for x
    x = 862,815.48/1,315.20
  6. Step 6: Final answer
    x = 656.04

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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.