Home / 1,270.38-1,905.88-437.46

Finding the Fourth Proportional to 1,270.38, 1,905.88 and 437.46

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Solution

The fourth proportional to 1,270.38, 1,905.88 and 437.46 is: 656.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.38 : 1,905.88 = 437.46 : x
  2. Step 2: Convert to fraction form
    1,270.38/1,905.88 = 437.46/x
  3. Step 3: Cross multiply
    1,270.38x = 1,905.88 × 437.46
  4. Step 4: Simplify right side
    1,270.38x = 833,740.07
  5. Step 5: Solve for x
    x = 833,740.07/1,270.38
  6. Step 6: Final answer
    x = 656.29

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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.