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Finding the Fourth Proportional to 784.04, 1,173.90 and 591.08

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Solution

The fourth proportional to 784.04, 1,173.90 and 591.08 is: 884.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.04 : 1,173.90 = 591.08 : x
  2. Step 2: Convert to fraction form
    784.04/1,173.90 = 591.08/x
  3. Step 3: Cross multiply
    784.04x = 1,173.90 × 591.08
  4. Step 4: Simplify right side
    784.04x = 693,868.81
  5. Step 5: Solve for x
    x = 693,868.81/784.04
  6. Step 6: Final answer
    x = 884.99

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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.