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Finding the Fourth Proportional to 526.12, 787.76 and 343.06

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Solution

The fourth proportional to 526.12, 787.76 and 343.06 is: 513.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.12 : 787.76 = 343.06 : x
  2. Step 2: Convert to fraction form
    526.12/787.76 = 343.06/x
  3. Step 3: Cross multiply
    526.12x = 787.76 × 343.06
  4. Step 4: Simplify right side
    526.12x = 270,246.55
  5. Step 5: Solve for x
    x = 270,246.55/526.12
  6. Step 6: Final answer
    x = 513.66

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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.