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Finding the Fourth Proportional to 524.55, 787.11 and 216.66

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Solution

The fourth proportional to 524.55, 787.11 and 216.66 is: 325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.55 : 787.11 = 216.66 : x
  2. Step 2: Convert to fraction form
    524.55/787.11 = 216.66/x
  3. Step 3: Cross multiply
    524.55x = 787.11 × 216.66
  4. Step 4: Simplify right side
    524.55x = 170,535.25
  5. Step 5: Solve for x
    x = 170,535.25/524.55
  6. Step 6: Final answer
    x = 325.11

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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.