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Finding the Fourth Proportional to 1,091.02, 1,633.68 and 603.40

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Solution

The fourth proportional to 1,091.02, 1,633.68 and 603.40 is: 903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.02 : 1,633.68 = 603.40 : x
  2. Step 2: Convert to fraction form
    1,091.02/1,633.68 = 603.40/x
  3. Step 3: Cross multiply
    1,091.02x = 1,633.68 × 603.40
  4. Step 4: Simplify right side
    1,091.02x = 985,762.51
  5. Step 5: Solve for x
    x = 985,762.51/1,091.02
  6. Step 6: Final answer
    x = 903.52

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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.