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Finding the Fourth Proportional to 955.58, 1,318.83 and 562.83

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Solution

The fourth proportional to 955.58, 1,318.83 and 562.83 is: 776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.58 : 1,318.83 = 562.83 : x
  2. Step 2: Convert to fraction form
    955.58/1,318.83 = 562.83/x
  3. Step 3: Cross multiply
    955.58x = 1,318.83 × 562.83
  4. Step 4: Simplify right side
    955.58x = 742,277.09
  5. Step 5: Solve for x
    x = 742,277.09/955.58
  6. Step 6: Final answer
    x = 776.79

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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.