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Finding the Fourth Proportional to 955.85, 1,318.87 and 624.76

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Solution

The fourth proportional to 955.85, 1,318.87 and 624.76 is: 862.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.85 : 1,318.87 = 624.76 : x
  2. Step 2: Convert to fraction form
    955.85/1,318.87 = 624.76/x
  3. Step 3: Cross multiply
    955.85x = 1,318.87 × 624.76
  4. Step 4: Simplify right side
    955.85x = 823,971.19
  5. Step 5: Solve for x
    x = 823,971.19/955.85
  6. Step 6: Final answer
    x = 862.03

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Double scale
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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.