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Finding the Fourth Proportional to 924.27, 1,386.77 and 437.73

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Solution

The fourth proportional to 924.27, 1,386.77 and 437.73 is: 656.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.27 : 1,386.77 = 437.73 : x
  2. Step 2: Convert to fraction form
    924.27/1,386.77 = 437.73/x
  3. Step 3: Cross multiply
    924.27x = 1,386.77 × 437.73
  4. Step 4: Simplify right side
    924.27x = 607,028.64
  5. Step 5: Solve for x
    x = 607,028.64/924.27
  6. Step 6: Final answer
    x = 656.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.