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Finding the Fourth Proportional to 774.63, 1,162.35 and 514.89

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Solution

The fourth proportional to 774.63, 1,162.35 and 514.89 is: 772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.63 : 1,162.35 = 514.89 : x
  2. Step 2: Convert to fraction form
    774.63/1,162.35 = 514.89/x
  3. Step 3: Cross multiply
    774.63x = 1,162.35 × 514.89
  4. Step 4: Simplify right side
    774.63x = 598,482.39
  5. Step 5: Solve for x
    x = 598,482.39/774.63
  6. Step 6: Final answer
    x = 772.60

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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.