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Finding the Fourth Proportional to 526.40, 726 and 371.12

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Solution

The fourth proportional to 526.40, 726 and 371.12 is: 511.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.40 : 726 = 371.12 : x
  2. Step 2: Convert to fraction form
    526.40/726 = 371.12/x
  3. Step 3: Cross multiply
    526.40x = 726 × 371.12
  4. Step 4: Simplify right side
    526.40x = 269,433.12
  5. Step 5: Solve for x
    x = 269,433.12/526.40
  6. Step 6: Final answer
    x = 511.84

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Why These Related Problems?

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