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Finding the Fourth Proportional to 613.68, 847.05 and 365.04

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Solution

The fourth proportional to 613.68, 847.05 and 365.04 is: 503.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.68 : 847.05 = 365.04 : x
  2. Step 2: Convert to fraction form
    613.68/847.05 = 365.04/x
  3. Step 3: Cross multiply
    613.68x = 847.05 × 365.04
  4. Step 4: Simplify right side
    613.68x = 309,207.13
  5. Step 5: Solve for x
    x = 309,207.13/613.68
  6. Step 6: Final answer
    x = 503.86

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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.