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Finding the Fourth Proportional to 1,569.68, 2,355.28 and 736.39

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Solution

The fourth proportional to 1,569.68, 2,355.28 and 736.39 is: 1,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.68 : 2,355.28 = 736.39 : x
  2. Step 2: Convert to fraction form
    1,569.68/2,355.28 = 736.39/x
  3. Step 3: Cross multiply
    1,569.68x = 2,355.28 × 736.39
  4. Step 4: Simplify right side
    1,569.68x = 1,734,404.64
  5. Step 5: Solve for x
    x = 1,734,404.64/1,569.68
  6. Step 6: Final answer
    x = 1,104.94

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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.