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Finding the Fourth Proportional to 964.15, 1,330.62 and 610.18

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Solution

The fourth proportional to 964.15, 1,330.62 and 610.18 is: 842.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.15 : 1,330.62 = 610.18 : x
  2. Step 2: Convert to fraction form
    964.15/1,330.62 = 610.18/x
  3. Step 3: Cross multiply
    964.15x = 1,330.62 × 610.18
  4. Step 4: Simplify right side
    964.15x = 811,917.71
  5. Step 5: Solve for x
    x = 811,917.71/964.15
  6. Step 6: Final answer
    x = 842.11

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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.