Home / 1,054.20-1,581.27-361.35

Finding the Fourth Proportional to 1,054.20, 1,581.27 and 361.35

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Solution

The fourth proportional to 1,054.20, 1,581.27 and 361.35 is: 542.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.20 : 1,581.27 = 361.35 : x
  2. Step 2: Convert to fraction form
    1,054.20/1,581.27 = 361.35/x
  3. Step 3: Cross multiply
    1,054.20x = 1,581.27 × 361.35
  4. Step 4: Simplify right side
    1,054.20x = 571,391.91
  5. Step 5: Solve for x
    x = 571,391.91/1,054.20
  6. Step 6: Final answer
    x = 542.01

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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.