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Finding the Fourth Proportional to 1,643.31, 2,465.02 and 603.62

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Solution

The fourth proportional to 1,643.31, 2,465.02 and 603.62 is: 905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.31 : 2,465.02 = 603.62 : x
  2. Step 2: Convert to fraction form
    1,643.31/2,465.02 = 603.62/x
  3. Step 3: Cross multiply
    1,643.31x = 2,465.02 × 603.62
  4. Step 4: Simplify right side
    1,643.31x = 1,487,933.05
  5. Step 5: Solve for x
    x = 1,487,933.05/1,643.31
  6. Step 6: Final answer
    x = 905.45

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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.