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Finding the Fourth Proportional to 1,327.36, 1,830.72 and 907.96

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Solution

The fourth proportional to 1,327.36, 1,830.72 and 907.96 is: 1,252.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.36 : 1,830.72 = 907.96 : x
  2. Step 2: Convert to fraction form
    1,327.36/1,830.72 = 907.96/x
  3. Step 3: Cross multiply
    1,327.36x = 1,830.72 × 907.96
  4. Step 4: Simplify right side
    1,327.36x = 1,662,220.53
  5. Step 5: Solve for x
    x = 1,662,220.53/1,327.36
  6. Step 6: Final answer
    x = 1,252.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.