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Finding the Fourth Proportional to 631.10, 870.18 and 444.62

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Solution

The fourth proportional to 631.10, 870.18 and 444.62 is: 613.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.10 : 870.18 = 444.62 : x
  2. Step 2: Convert to fraction form
    631.10/870.18 = 444.62/x
  3. Step 3: Cross multiply
    631.10x = 870.18 × 444.62
  4. Step 4: Simplify right side
    631.10x = 386,899.43
  5. Step 5: Solve for x
    x = 386,899.43/631.10
  6. Step 6: Final answer
    x = 613.06

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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.