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Finding the Fourth Proportional to 907.20, 1,360.27 and 290.59

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Solution

The fourth proportional to 907.20, 1,360.27 and 290.59 is: 435.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.20 : 1,360.27 = 290.59 : x
  2. Step 2: Convert to fraction form
    907.20/1,360.27 = 290.59/x
  3. Step 3: Cross multiply
    907.20x = 1,360.27 × 290.59
  4. Step 4: Simplify right side
    907.20x = 395,276.73
  5. Step 5: Solve for x
    x = 395,276.73/907.20
  6. Step 6: Final answer
    x = 435.71

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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.