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Finding the Fourth Proportional to 929.33, 1,282.75 and 634.59

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Solution

The fourth proportional to 929.33, 1,282.75 and 634.59 is: 875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.33 : 1,282.75 = 634.59 : x
  2. Step 2: Convert to fraction form
    929.33/1,282.75 = 634.59/x
  3. Step 3: Cross multiply
    929.33x = 1,282.75 × 634.59
  4. Step 4: Simplify right side
    929.33x = 814,022.31
  5. Step 5: Solve for x
    x = 814,022.31/929.33
  6. Step 6: Final answer
    x = 875.93

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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.