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Finding the Fourth Proportional to 907.11, 1,251.71 and 533.96

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Solution

The fourth proportional to 907.11, 1,251.71 and 533.96 is: 736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.11 : 1,251.71 = 533.96 : x
  2. Step 2: Convert to fraction form
    907.11/1,251.71 = 533.96/x
  3. Step 3: Cross multiply
    907.11x = 1,251.71 × 533.96
  4. Step 4: Simplify right side
    907.11x = 668,354.14
  5. Step 5: Solve for x
    x = 668,354.14/907.11
  6. Step 6: Final answer
    x = 736.80

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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.