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Finding the Fourth Proportional to 1,268.48, 1,902.24 and 584

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Solution

The fourth proportional to 1,268.48, 1,902.24 and 584 is: 875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.48 : 1,902.24 = 584 : x
  2. Step 2: Convert to fraction form
    1,268.48/1,902.24 = 584/x
  3. Step 3: Cross multiply
    1,268.48x = 1,902.24 × 584
  4. Step 4: Simplify right side
    1,268.48x = 1,110,908.16
  5. Step 5: Solve for x
    x = 1,110,908.16/1,268.48
  6. Step 6: Final answer
    x = 875.78

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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.