Home / 1,154.12-1,731.11-423.36

Finding the Fourth Proportional to 1,154.12, 1,731.11 and 423.36

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Solution

The fourth proportional to 1,154.12, 1,731.11 and 423.36 is: 635.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.12 : 1,731.11 = 423.36 : x
  2. Step 2: Convert to fraction form
    1,154.12/1,731.11 = 423.36/x
  3. Step 3: Cross multiply
    1,154.12x = 1,731.11 × 423.36
  4. Step 4: Simplify right side
    1,154.12x = 732,880.61
  5. Step 5: Solve for x
    x = 732,880.61/1,154.12
  6. Step 6: Final answer
    x = 635.02

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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.