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Finding the Fourth Proportional to 954.79, 1,317.41 and 744.59

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Solution

The fourth proportional to 954.79, 1,317.41 and 744.59 is: 1,027.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.79 : 1,317.41 = 744.59 : x
  2. Step 2: Convert to fraction form
    954.79/1,317.41 = 744.59/x
  3. Step 3: Cross multiply
    954.79x = 1,317.41 × 744.59
  4. Step 4: Simplify right side
    954.79x = 980,936.86
  5. Step 5: Solve for x
    x = 980,936.86/954.79
  6. Step 6: Final answer
    x = 1,027.39

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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.