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Finding the Fourth Proportional to 631.04, 870.92 and 475.52

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Solution

The fourth proportional to 631.04, 870.92 and 475.52 is: 656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.04 : 870.92 = 475.52 : x
  2. Step 2: Convert to fraction form
    631.04/870.92 = 475.52/x
  3. Step 3: Cross multiply
    631.04x = 870.92 × 475.52
  4. Step 4: Simplify right side
    631.04x = 414,139.88
  5. Step 5: Solve for x
    x = 414,139.88/631.04
  6. Step 6: Final answer
    x = 656.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.