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Finding the Fourth Proportional to 1,434.52, 2,151.24 and 612.37

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Solution

The fourth proportional to 1,434.52, 2,151.24 and 612.37 is: 918.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.52 : 2,151.24 = 612.37 : x
  2. Step 2: Convert to fraction form
    1,434.52/2,151.24 = 612.37/x
  3. Step 3: Cross multiply
    1,434.52x = 2,151.24 × 612.37
  4. Step 4: Simplify right side
    1,434.52x = 1,317,354.84
  5. Step 5: Solve for x
    x = 1,317,354.84/1,434.52
  6. Step 6: Final answer
    x = 918.32

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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.