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Finding the Fourth Proportional to 904.24, 1,247.68 and 550.08

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Solution

The fourth proportional to 904.24, 1,247.68 and 550.08 is: 759.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.24 : 1,247.68 = 550.08 : x
  2. Step 2: Convert to fraction form
    904.24/1,247.68 = 550.08/x
  3. Step 3: Cross multiply
    904.24x = 1,247.68 × 550.08
  4. Step 4: Simplify right side
    904.24x = 686,323.81
  5. Step 5: Solve for x
    x = 686,323.81/904.24
  6. Step 6: Final answer
    x = 759.01

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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.