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Finding the Fourth Proportional to 955.60, 1,318.85 and 562.66

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Solution

The fourth proportional to 955.60, 1,318.85 and 562.66 is: 776.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.60 : 1,318.85 = 562.66 : x
  2. Step 2: Convert to fraction form
    955.60/1,318.85 = 562.66/x
  3. Step 3: Cross multiply
    955.60x = 1,318.85 × 562.66
  4. Step 4: Simplify right side
    955.60x = 742,064.14
  5. Step 5: Solve for x
    x = 742,064.14/955.60
  6. Step 6: Final answer
    x = 776.54

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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.