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Finding the Fourth Proportional to 694.53, 958.65 and 570.51

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Solution

The fourth proportional to 694.53, 958.65 and 570.51 is: 787.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.53 : 958.65 = 570.51 : x
  2. Step 2: Convert to fraction form
    694.53/958.65 = 570.51/x
  3. Step 3: Cross multiply
    694.53x = 958.65 × 570.51
  4. Step 4: Simplify right side
    694.53x = 546,919.41
  5. Step 5: Solve for x
    x = 546,919.41/694.53
  6. Step 6: Final answer
    x = 787.47

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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.