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Finding the Fourth Proportional to 502.56, 696.96 and 470.88

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Solution

The fourth proportional to 502.56, 696.96 and 470.88 is: 653.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.56 : 696.96 = 470.88 : x
  2. Step 2: Convert to fraction form
    502.56/696.96 = 470.88/x
  3. Step 3: Cross multiply
    502.56x = 696.96 × 470.88
  4. Step 4: Simplify right side
    502.56x = 328,184.52
  5. Step 5: Solve for x
    x = 328,184.52/502.56
  6. Step 6: Final answer
    x = 653.03

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.