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Finding the Fourth Proportional to 907.20, 1,359.74 and 496.54

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Solution

The fourth proportional to 907.20, 1,359.74 and 496.54 is: 744.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.20 : 1,359.74 = 496.54 : x
  2. Step 2: Convert to fraction form
    907.20/1,359.74 = 496.54/x
  3. Step 3: Cross multiply
    907.20x = 1,359.74 × 496.54
  4. Step 4: Simplify right side
    907.20x = 675,165.30
  5. Step 5: Solve for x
    x = 675,165.30/907.20
  6. Step 6: Final answer
    x = 744.23

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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.