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Finding the Fourth Proportional to 964.68, 1,330.72 and 610.76

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Solution

The fourth proportional to 964.68, 1,330.72 and 610.76 is: 842.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.68 : 1,330.72 = 610.76 : x
  2. Step 2: Convert to fraction form
    964.68/1,330.72 = 610.76/x
  3. Step 3: Cross multiply
    964.68x = 1,330.72 × 610.76
  4. Step 4: Simplify right side
    964.68x = 812,750.55
  5. Step 5: Solve for x
    x = 812,750.55/964.68
  6. Step 6: Final answer
    x = 842.51

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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.