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Finding the Fourth Proportional to 924.36, 1,384.61 and 577.86

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Solution

The fourth proportional to 924.36, 1,384.61 and 577.86 is: 865.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.36 : 1,384.61 = 577.86 : x
  2. Step 2: Convert to fraction form
    924.36/1,384.61 = 577.86/x
  3. Step 3: Cross multiply
    924.36x = 1,384.61 × 577.86
  4. Step 4: Simplify right side
    924.36x = 800,107.85
  5. Step 5: Solve for x
    x = 800,107.85/924.36
  6. Step 6: Final answer
    x = 865.58

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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.