Home / 1,365.28-2,045.60-749.50

Finding the Fourth Proportional to 1,365.28, 2,045.60 and 749.50

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Solution

The fourth proportional to 1,365.28, 2,045.60 and 749.50 is: 1,122.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.28 : 2,045.60 = 749.50 : x
  2. Step 2: Convert to fraction form
    1,365.28/2,045.60 = 749.50/x
  3. Step 3: Cross multiply
    1,365.28x = 2,045.60 × 749.50
  4. Step 4: Simplify right side
    1,365.28x = 1,533,186.87
  5. Step 5: Solve for x
    x = 1,533,186.87/1,365.28
  6. Step 6: Final answer
    x = 1,122.98

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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.