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Finding the Fourth Proportional to 964.59, 1,330.98 and 633.51

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Solution

The fourth proportional to 964.59, 1,330.98 and 633.51 is: 874.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.59 : 1,330.98 = 633.51 : x
  2. Step 2: Convert to fraction form
    964.59/1,330.98 = 633.51/x
  3. Step 3: Cross multiply
    964.59x = 1,330.98 × 633.51
  4. Step 4: Simplify right side
    964.59x = 843,189.14
  5. Step 5: Solve for x
    x = 843,189.14/964.59
  6. Step 6: Final answer
    x = 874.14

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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.