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Finding the Fourth Proportional to 1,424.79, 2,137.32 and 500.31

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Solution

The fourth proportional to 1,424.79, 2,137.32 and 500.31 is: 750.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.79 : 2,137.32 = 500.31 : x
  2. Step 2: Convert to fraction form
    1,424.79/2,137.32 = 500.31/x
  3. Step 3: Cross multiply
    1,424.79x = 2,137.32 × 500.31
  4. Step 4: Simplify right side
    1,424.79x = 1,069,322.57
  5. Step 5: Solve for x
    x = 1,069,322.57/1,424.79
  6. Step 6: Final answer
    x = 750.51

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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.