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Finding the Fourth Proportional to 955.12, 1,317.60 and 601.46

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Solution

The fourth proportional to 955.12, 1,317.60 and 601.46 is: 829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.12 : 1,317.60 = 601.46 : x
  2. Step 2: Convert to fraction form
    955.12/1,317.60 = 601.46/x
  3. Step 3: Cross multiply
    955.12x = 1,317.60 × 601.46
  4. Step 4: Simplify right side
    955.12x = 792,483.70
  5. Step 5: Solve for x
    x = 792,483.70/955.12
  6. Step 6: Final answer
    x = 829.72

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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.