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Finding the Fourth Proportional to 699.02, 964.67 and 419.16

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Solution

The fourth proportional to 699.02, 964.67 and 419.16 is: 578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.02 : 964.67 = 419.16 : x
  2. Step 2: Convert to fraction form
    699.02/964.67 = 419.16/x
  3. Step 3: Cross multiply
    699.02x = 964.67 × 419.16
  4. Step 4: Simplify right side
    699.02x = 404,351.08
  5. Step 5: Solve for x
    x = 404,351.08/699.02
  6. Step 6: Final answer
    x = 578.45

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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.