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Finding the Fourth Proportional to 730.35, 1,095.26 and 291.38

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Solution

The fourth proportional to 730.35, 1,095.26 and 291.38 is: 436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.35 : 1,095.26 = 291.38 : x
  2. Step 2: Convert to fraction form
    730.35/1,095.26 = 291.38/x
  3. Step 3: Cross multiply
    730.35x = 1,095.26 × 291.38
  4. Step 4: Simplify right side
    730.35x = 319,129.93
  5. Step 5: Solve for x
    x = 319,129.93/730.35
  6. Step 6: Final answer
    x = 436.95

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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.