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Finding the Fourth Proportional to 730.19, 1,095.81 and 291.18

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Solution

The fourth proportional to 730.19, 1,095.81 and 291.18 is: 436.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.19 : 1,095.81 = 291.18 : x
  2. Step 2: Convert to fraction form
    730.19/1,095.81 = 291.18/x
  3. Step 3: Cross multiply
    730.19x = 1,095.81 × 291.18
  4. Step 4: Simplify right side
    730.19x = 319,081.52
  5. Step 5: Solve for x
    x = 319,081.52/730.19
  6. Step 6: Final answer
    x = 436.99

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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.