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Finding the Fourth Proportional to 954.41, 1,317.23 and 556.21

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Solution

The fourth proportional to 954.41, 1,317.23 and 556.21 is: 767.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.41 : 1,317.23 = 556.21 : x
  2. Step 2: Convert to fraction form
    954.41/1,317.23 = 556.21/x
  3. Step 3: Cross multiply
    954.41x = 1,317.23 × 556.21
  4. Step 4: Simplify right side
    954.41x = 732,653.21
  5. Step 5: Solve for x
    x = 732,653.21/954.41
  6. Step 6: Final answer
    x = 767.65

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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.