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Finding the Fourth Proportional to 908.01, 1,360.04 and 561.43

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Solution

The fourth proportional to 908.01, 1,360.04 and 561.43 is: 840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.01 : 1,360.04 = 561.43 : x
  2. Step 2: Convert to fraction form
    908.01/1,360.04 = 561.43/x
  3. Step 3: Cross multiply
    908.01x = 1,360.04 × 561.43
  4. Step 4: Simplify right side
    908.01x = 763,566.15
  5. Step 5: Solve for x
    x = 763,566.15/908.01
  6. Step 6: Final answer
    x = 840.92

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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.