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Finding the Fourth Proportional to 1,069.24, 1,475.55 and 603.49

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Solution

The fourth proportional to 1,069.24, 1,475.55 and 603.49 is: 832.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069.24 : 1,475.55 = 603.49 : x
  2. Step 2: Convert to fraction form
    1,069.24/1,475.55 = 603.49/x
  3. Step 3: Cross multiply
    1,069.24x = 1,475.55 × 603.49
  4. Step 4: Simplify right side
    1,069.24x = 890,485.44
  5. Step 5: Solve for x
    x = 890,485.44/1,069.24
  6. Step 6: Final answer
    x = 832.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.