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Finding the Fourth Proportional to 879.58, 1,316.31 and 532.72

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Solution

The fourth proportional to 879.58, 1,316.31 and 532.72 is: 797.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    879.58 : 1,316.31 = 532.72 : x
  2. Step 2: Convert to fraction form
    879.58/1,316.31 = 532.72/x
  3. Step 3: Cross multiply
    879.58x = 1,316.31 × 532.72
  4. Step 4: Simplify right side
    879.58x = 701,224.66
  5. Step 5: Solve for x
    x = 701,224.66/879.58
  6. Step 6: Final answer
    x = 797.23

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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.