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Finding the Fourth Proportional to 1,603.42, 2,403.28 and 735.91

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Solution

The fourth proportional to 1,603.42, 2,403.28 and 735.91 is: 1,103.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.42 : 2,403.28 = 735.91 : x
  2. Step 2: Convert to fraction form
    1,603.42/2,403.28 = 735.91/x
  3. Step 3: Cross multiply
    1,603.42x = 2,403.28 × 735.91
  4. Step 4: Simplify right side
    1,603.42x = 1,768,597.78
  5. Step 5: Solve for x
    x = 1,768,597.78/1,603.42
  6. Step 6: Final answer
    x = 1,103.02

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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.