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Finding the Fourth Proportional to 526.20, 787.36 and 372.28

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Solution

The fourth proportional to 526.20, 787.36 and 372.28 is: 557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.20 : 787.36 = 372.28 : x
  2. Step 2: Convert to fraction form
    526.20/787.36 = 372.28/x
  3. Step 3: Cross multiply
    526.20x = 787.36 × 372.28
  4. Step 4: Simplify right side
    526.20x = 293,118.38
  5. Step 5: Solve for x
    x = 293,118.38/526.20
  6. Step 6: Final answer
    x = 557.05

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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.