Home / 1,154.21-1,731.51-424.31

Finding the Fourth Proportional to 1,154.21, 1,731.51 and 424.31

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Solution

The fourth proportional to 1,154.21, 1,731.51 and 424.31 is: 636.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.21 : 1,731.51 = 424.31 : x
  2. Step 2: Convert to fraction form
    1,154.21/1,731.51 = 424.31/x
  3. Step 3: Cross multiply
    1,154.21x = 1,731.51 × 424.31
  4. Step 4: Simplify right side
    1,154.21x = 734,697.01
  5. Step 5: Solve for x
    x = 734,697.01/1,154.21
  6. Step 6: Final answer
    x = 636.54

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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.