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Finding the Fourth Proportional to 1,134.86, 1,564.81 and 924.64

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Solution

The fourth proportional to 1,134.86, 1,564.81 and 924.64 is: 1,274.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.86 : 1,564.81 = 924.64 : x
  2. Step 2: Convert to fraction form
    1,134.86/1,564.81 = 924.64/x
  3. Step 3: Cross multiply
    1,134.86x = 1,564.81 × 924.64
  4. Step 4: Simplify right side
    1,134.86x = 1,446,879.69
  5. Step 5: Solve for x
    x = 1,446,879.69/1,134.86
  6. Step 6: Final answer
    x = 1,274.95

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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.