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Finding the Fourth Proportional to 525.16, 787.52 and 178.40

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Solution

The fourth proportional to 525.16, 787.52 and 178.40 is: 267.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.16 : 787.52 = 178.40 : x
  2. Step 2: Convert to fraction form
    525.16/787.52 = 178.40/x
  3. Step 3: Cross multiply
    525.16x = 787.52 × 178.40
  4. Step 4: Simplify right side
    525.16x = 140,493.57
  5. Step 5: Solve for x
    x = 140,493.57/525.16
  6. Step 6: Final answer
    x = 267.53

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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.