Home / 1,155.74-1,733.90-539.10

Finding the Fourth Proportional to 1,155.74, 1,733.90 and 539.10

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Solution

The fourth proportional to 1,155.74, 1,733.90 and 539.10 is: 808.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.74 : 1,733.90 = 539.10 : x
  2. Step 2: Convert to fraction form
    1,155.74/1,733.90 = 539.10/x
  3. Step 3: Cross multiply
    1,155.74x = 1,733.90 × 539.10
  4. Step 4: Simplify right side
    1,155.74x = 934,742.79
  5. Step 5: Solve for x
    x = 934,742.79/1,155.74
  6. Step 6: Final answer
    x = 808.79

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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.