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Finding the Fourth Proportional to 788.02, 1,182.28 and 514.64

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Solution

The fourth proportional to 788.02, 1,182.28 and 514.64 is: 772.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.02 : 1,182.28 = 514.64 : x
  2. Step 2: Convert to fraction form
    788.02/1,182.28 = 514.64/x
  3. Step 3: Cross multiply
    788.02x = 1,182.28 × 514.64
  4. Step 4: Simplify right side
    788.02x = 608,451.21
  5. Step 5: Solve for x
    x = 608,451.21/788.02
  6. Step 6: Final answer
    x = 772.13

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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.