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Finding the Fourth Proportional to 631.41, 874.72 and 616.29

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Solution

The fourth proportional to 631.41, 874.72 and 616.29 is: 853.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.41 : 874.72 = 616.29 : x
  2. Step 2: Convert to fraction form
    631.41/874.72 = 616.29/x
  3. Step 3: Cross multiply
    631.41x = 874.72 × 616.29
  4. Step 4: Simplify right side
    631.41x = 539,081.19
  5. Step 5: Solve for x
    x = 539,081.19/631.41
  6. Step 6: Final answer
    x = 853.77

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.