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Finding the Fourth Proportional to 730.64, 1,008.97 and 469.11

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Solution

The fourth proportional to 730.64, 1,008.97 and 469.11 is: 647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.64 : 1,008.97 = 469.11 : x
  2. Step 2: Convert to fraction form
    730.64/1,008.97 = 469.11/x
  3. Step 3: Cross multiply
    730.64x = 1,008.97 × 469.11
  4. Step 4: Simplify right side
    730.64x = 473,317.92
  5. Step 5: Solve for x
    x = 473,317.92/730.64
  6. Step 6: Final answer
    x = 647.81

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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.