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Finding the Fourth Proportional to 502.92, 694.28 and 347.40

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Solution

The fourth proportional to 502.92, 694.28 and 347.40 is: 479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.92 : 694.28 = 347.40 : x
  2. Step 2: Convert to fraction form
    502.92/694.28 = 347.40/x
  3. Step 3: Cross multiply
    502.92x = 694.28 × 347.40
  4. Step 4: Simplify right side
    502.92x = 241,192.87
  5. Step 5: Solve for x
    x = 241,192.87/502.92
  6. Step 6: Final answer
    x = 479.58

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1.5x scale

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.