Home / 1,155.59-1,733.38-289.90

Finding the Fourth Proportional to 1,155.59, 1,733.38 and 289.90

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Solution

The fourth proportional to 1,155.59, 1,733.38 and 289.90 is: 434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.59 : 1,733.38 = 289.90 : x
  2. Step 2: Convert to fraction form
    1,155.59/1,733.38 = 289.90/x
  3. Step 3: Cross multiply
    1,155.59x = 1,733.38 × 289.90
  4. Step 4: Simplify right side
    1,155.59x = 502,506.86
  5. Step 5: Solve for x
    x = 502,506.86/1,155.59
  6. Step 6: Final answer
    x = 434.85

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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.