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Finding the Fourth Proportional to 908.88, 1,360.76 and 579.01

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Solution

The fourth proportional to 908.88, 1,360.76 and 579.01 is: 866.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.88 : 1,360.76 = 579.01 : x
  2. Step 2: Convert to fraction form
    908.88/1,360.76 = 579.01/x
  3. Step 3: Cross multiply
    908.88x = 1,360.76 × 579.01
  4. Step 4: Simplify right side
    908.88x = 787,893.65
  5. Step 5: Solve for x
    x = 787,893.65/908.88
  6. Step 6: Final answer
    x = 866.88

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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.