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Finding the Fourth Proportional to 774.05, 1,068.30 and 437.99

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Solution

The fourth proportional to 774.05, 1,068.30 and 437.99 is: 604.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.05 : 1,068.30 = 437.99 : x
  2. Step 2: Convert to fraction form
    774.05/1,068.30 = 437.99/x
  3. Step 3: Cross multiply
    774.05x = 1,068.30 × 437.99
  4. Step 4: Simplify right side
    774.05x = 467,904.72
  5. Step 5: Solve for x
    x = 467,904.72/774.05
  6. Step 6: Final answer
    x = 604.49

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1.5x scale

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.