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Finding the Fourth Proportional to 1,089.04, 1,502.86 and 591.68

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Solution

The fourth proportional to 1,089.04, 1,502.86 and 591.68 is: 816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.04 : 1,502.86 = 591.68 : x
  2. Step 2: Convert to fraction form
    1,089.04/1,502.86 = 591.68/x
  3. Step 3: Cross multiply
    1,089.04x = 1,502.86 × 591.68
  4. Step 4: Simplify right side
    1,089.04x = 889,212.20
  5. Step 5: Solve for x
    x = 889,212.20/1,089.04
  6. Step 6: Final answer
    x = 816.51

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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.