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Finding the Fourth Proportional to 1,404.79, 2,107.57 and 614.22

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Solution

The fourth proportional to 1,404.79, 2,107.57 and 614.22 is: 921.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404.79 : 2,107.57 = 614.22 : x
  2. Step 2: Convert to fraction form
    1,404.79/2,107.57 = 614.22/x
  3. Step 3: Cross multiply
    1,404.79x = 2,107.57 × 614.22
  4. Step 4: Simplify right side
    1,404.79x = 1,294,501.11
  5. Step 5: Solve for x
    x = 1,294,501.11/1,404.79
  6. Step 6: Final answer
    x = 921.49

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1.5x scale

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.