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Finding the Fourth Proportional to 922.51, 1,273.08 and 502.87

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Solution

The fourth proportional to 922.51, 1,273.08 and 502.87 is: 693.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.51 : 1,273.08 = 502.87 : x
  2. Step 2: Convert to fraction form
    922.51/1,273.08 = 502.87/x
  3. Step 3: Cross multiply
    922.51x = 1,273.08 × 502.87
  4. Step 4: Simplify right side
    922.51x = 640,193.74
  5. Step 5: Solve for x
    x = 640,193.74/922.51
  6. Step 6: Final answer
    x = 693.97

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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.