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Finding the Fourth Proportional to 922.76, 1,273.41 and 529.79

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Solution

The fourth proportional to 922.76, 1,273.41 and 529.79 is: 731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.76 : 1,273.41 = 529.79 : x
  2. Step 2: Convert to fraction form
    922.76/1,273.41 = 529.79/x
  3. Step 3: Cross multiply
    922.76x = 1,273.41 × 529.79
  4. Step 4: Simplify right side
    922.76x = 674,643.07
  5. Step 5: Solve for x
    x = 674,643.07/922.76
  6. Step 6: Final answer
    x = 731.12

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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.