Home / 1,154.20-1,731.30-374.20

Finding the Fourth Proportional to 1,154.20, 1,731.30 and 374.20

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Solution

The fourth proportional to 1,154.20, 1,731.30 and 374.20 is: 561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.20 : 1,731.30 = 374.20 : x
  2. Step 2: Convert to fraction form
    1,154.20/1,731.30 = 374.20/x
  3. Step 3: Cross multiply
    1,154.20x = 1,731.30 × 374.20
  4. Step 4: Simplify right side
    1,154.20x = 647,852.46
  5. Step 5: Solve for x
    x = 647,852.46/1,154.20
  6. Step 6: Final answer
    x = 561.30

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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.