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Finding the Fourth Proportional to 956.12, 1,435.05 and 631.71

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Solution

The fourth proportional to 956.12, 1,435.05 and 631.71 is: 948.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.12 : 1,435.05 = 631.71 : x
  2. Step 2: Convert to fraction form
    956.12/1,435.05 = 631.71/x
  3. Step 3: Cross multiply
    956.12x = 1,435.05 × 631.71
  4. Step 4: Simplify right side
    956.12x = 906,535.44
  5. Step 5: Solve for x
    x = 906,535.44/956.12
  6. Step 6: Final answer
    x = 948.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.