Home / 1,354.07-2,031.32-429.46

Finding the Fourth Proportional to 1,354.07, 2,031.32 and 429.46

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Solution

The fourth proportional to 1,354.07, 2,031.32 and 429.46 is: 644.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.07 : 2,031.32 = 429.46 : x
  2. Step 2: Convert to fraction form
    1,354.07/2,031.32 = 429.46/x
  3. Step 3: Cross multiply
    1,354.07x = 2,031.32 × 429.46
  4. Step 4: Simplify right side
    1,354.07x = 872,366.68
  5. Step 5: Solve for x
    x = 872,366.68/1,354.07
  6. Step 6: Final answer
    x = 644.25

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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.