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Finding the Fourth Proportional to 881.13, 1,215.75 and 526.98

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Solution

The fourth proportional to 881.13, 1,215.75 and 526.98 is: 727.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.13 : 1,215.75 = 526.98 : x
  2. Step 2: Convert to fraction form
    881.13/1,215.75 = 526.98/x
  3. Step 3: Cross multiply
    881.13x = 1,215.75 × 526.98
  4. Step 4: Simplify right side
    881.13x = 640,675.94
  5. Step 5: Solve for x
    x = 640,675.94/881.13
  6. Step 6: Final answer
    x = 727.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.