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Finding the Fourth Proportional to 1,505.76, 2,255.76 and 733.92

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Solution

The fourth proportional to 1,505.76, 2,255.76 and 733.92 is: 1,099.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.76 : 2,255.76 = 733.92 : x
  2. Step 2: Convert to fraction form
    1,505.76/2,255.76 = 733.92/x
  3. Step 3: Cross multiply
    1,505.76x = 2,255.76 × 733.92
  4. Step 4: Simplify right side
    1,505.76x = 1,655,547.38
  5. Step 5: Solve for x
    x = 1,655,547.38/1,505.76
  6. Step 6: Final answer
    x = 1,099.48

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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.