Home / 1,155.90-1,733.50-607.78

Finding the Fourth Proportional to 1,155.90, 1,733.50 and 607.78

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Solution

The fourth proportional to 1,155.90, 1,733.50 and 607.78 is: 911.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.90 : 1,733.50 = 607.78 : x
  2. Step 2: Convert to fraction form
    1,155.90/1,733.50 = 607.78/x
  3. Step 3: Cross multiply
    1,155.90x = 1,733.50 × 607.78
  4. Step 4: Simplify right side
    1,155.90x = 1,053,586.63
  5. Step 5: Solve for x
    x = 1,053,586.63/1,155.90
  6. Step 6: Final answer
    x = 911.49

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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.