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Finding the Fourth Proportional to 881.56, 1,216.74 and 587.32

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Solution

The fourth proportional to 881.56, 1,216.74 and 587.32 is: 810.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.56 : 1,216.74 = 587.32 : x
  2. Step 2: Convert to fraction form
    881.56/1,216.74 = 587.32/x
  3. Step 3: Cross multiply
    881.56x = 1,216.74 × 587.32
  4. Step 4: Simplify right side
    881.56x = 714,615.74
  5. Step 5: Solve for x
    x = 714,615.74/881.56
  6. Step 6: Final answer
    x = 810.63

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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.