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Finding the Fourth Proportional to 660.71, 912.17 and 503.06

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Solution

The fourth proportional to 660.71, 912.17 and 503.06 is: 694.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.71 : 912.17 = 503.06 : x
  2. Step 2: Convert to fraction form
    660.71/912.17 = 503.06/x
  3. Step 3: Cross multiply
    660.71x = 912.17 × 503.06
  4. Step 4: Simplify right side
    660.71x = 458,872.94
  5. Step 5: Solve for x
    x = 458,872.94/660.71
  6. Step 6: Final answer
    x = 694.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.