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Finding the Fourth Proportional to 730.12, 1,005.94 and 508.68

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Solution

The fourth proportional to 730.12, 1,005.94 and 508.68 is: 700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.12 : 1,005.94 = 508.68 : x
  2. Step 2: Convert to fraction form
    730.12/1,005.94 = 508.68/x
  3. Step 3: Cross multiply
    730.12x = 1,005.94 × 508.68
  4. Step 4: Simplify right side
    730.12x = 511,701.56
  5. Step 5: Solve for x
    x = 511,701.56/730.12
  6. Step 6: Final answer
    x = 700.85

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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.