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Finding the Fourth Proportional to 699.11, 964.35 and 502.89

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Solution

The fourth proportional to 699.11, 964.35 and 502.89 is: 693.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.11 : 964.35 = 502.89 : x
  2. Step 2: Convert to fraction form
    699.11/964.35 = 502.89/x
  3. Step 3: Cross multiply
    699.11x = 964.35 × 502.89
  4. Step 4: Simplify right side
    699.11x = 484,961.97
  5. Step 5: Solve for x
    x = 484,961.97/699.11
  6. Step 6: Final answer
    x = 693.68

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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.