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Finding the Fourth Proportional to 704.11, 971.28 and 424.18

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Solution

The fourth proportional to 704.11, 971.28 and 424.18 is: 585.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.11 : 971.28 = 424.18 : x
  2. Step 2: Convert to fraction form
    704.11/971.28 = 424.18/x
  3. Step 3: Cross multiply
    704.11x = 971.28 × 424.18
  4. Step 4: Simplify right side
    704.11x = 411,995.12
  5. Step 5: Solve for x
    x = 411,995.12/704.11
  6. Step 6: Final answer
    x = 585.13

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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.