Home / 1,078.32-1,618.20-501.24

Finding the Fourth Proportional to 1,078.32, 1,618.20 and 501.24

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Solution

The fourth proportional to 1,078.32, 1,618.20 and 501.24 is: 752.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078.32 : 1,618.20 = 501.24 : x
  2. Step 2: Convert to fraction form
    1,078.32/1,618.20 = 501.24/x
  3. Step 3: Cross multiply
    1,078.32x = 1,618.20 × 501.24
  4. Step 4: Simplify right side
    1,078.32x = 811,106.57
  5. Step 5: Solve for x
    x = 811,106.57/1,078.32
  6. Step 6: Final answer
    x = 752.19

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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.