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Finding the Fourth Proportional to 502.76, 694.51 and 478.46

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Solution

The fourth proportional to 502.76, 694.51 and 478.46 is: 660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.76 : 694.51 = 478.46 : x
  2. Step 2: Convert to fraction form
    502.76/694.51 = 478.46/x
  3. Step 3: Cross multiply
    502.76x = 694.51 × 478.46
  4. Step 4: Simplify right side
    502.76x = 332,295.25
  5. Step 5: Solve for x
    x = 332,295.25/502.76
  6. Step 6: Final answer
    x = 660.94

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Find fourth proportional to 251.38, 347.26 and 239.23
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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.