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Finding the Fourth Proportional to 667.32, 921.30 and 502.26

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Solution

The fourth proportional to 667.32, 921.30 and 502.26 is: 693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.32 : 921.30 = 502.26 : x
  2. Step 2: Convert to fraction form
    667.32/921.30 = 502.26/x
  3. Step 3: Cross multiply
    667.32x = 921.30 × 502.26
  4. Step 4: Simplify right side
    667.32x = 462,732.14
  5. Step 5: Solve for x
    x = 462,732.14/667.32
  6. Step 6: Final answer
    x = 693.42

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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.