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Finding the Fourth Proportional to 730.13, 1,095.36 and 291.40

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Solution

The fourth proportional to 730.13, 1,095.36 and 291.40 is: 437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.13 : 1,095.36 = 291.40 : x
  2. Step 2: Convert to fraction form
    730.13/1,095.36 = 291.40/x
  3. Step 3: Cross multiply
    730.13x = 1,095.36 × 291.40
  4. Step 4: Simplify right side
    730.13x = 319,187.90
  5. Step 5: Solve for x
    x = 319,187.90/730.13
  6. Step 6: Final answer
    x = 437.17

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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.