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Finding the Fourth Proportional to 631.89, 943.20 and 585.57

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Solution

The fourth proportional to 631.89, 943.20 and 585.57 is: 874.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.89 : 943.20 = 585.57 : x
  2. Step 2: Convert to fraction form
    631.89/943.20 = 585.57/x
  3. Step 3: Cross multiply
    631.89x = 943.20 × 585.57
  4. Step 4: Simplify right side
    631.89x = 552,304.91
  5. Step 5: Solve for x
    x = 552,304.91/631.89
  6. Step 6: Final answer
    x = 874.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.