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Finding the Fourth Proportional to 935.96, 1,291.22 and 562.76

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Solution

The fourth proportional to 935.96, 1,291.22 and 562.76 is: 776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.96 : 1,291.22 = 562.76 : x
  2. Step 2: Convert to fraction form
    935.96/1,291.22 = 562.76/x
  3. Step 3: Cross multiply
    935.96x = 1,291.22 × 562.76
  4. Step 4: Simplify right side
    935.96x = 726,646.97
  5. Step 5: Solve for x
    x = 726,646.97/935.96
  6. Step 6: Final answer
    x = 776.37

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1.5x scale

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.