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Finding the Fourth Proportional to 525.13, 787.51 and 216.84

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Solution

The fourth proportional to 525.13, 787.51 and 216.84 is: 325.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.13 : 787.51 = 216.84 : x
  2. Step 2: Convert to fraction form
    525.13/787.51 = 216.84/x
  3. Step 3: Cross multiply
    525.13x = 787.51 × 216.84
  4. Step 4: Simplify right side
    525.13x = 170,763.67
  5. Step 5: Solve for x
    x = 170,763.67/525.13
  6. Step 6: Final answer
    x = 325.18

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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.