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Finding the Fourth Proportional to 526.28, 790.45 and 453.78

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Solution

The fourth proportional to 526.28, 790.45 and 453.78 is: 681.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.28 : 790.45 = 453.78 : x
  2. Step 2: Convert to fraction form
    526.28/790.45 = 453.78/x
  3. Step 3: Cross multiply
    526.28x = 790.45 × 453.78
  4. Step 4: Simplify right side
    526.28x = 358,689.27
  5. Step 5: Solve for x
    x = 358,689.27/526.28
  6. Step 6: Final answer
    x = 681.56

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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.