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Finding the Fourth Proportional to 770.08, 1,154.16 and 336.64

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Solution

The fourth proportional to 770.08, 1,154.16 and 336.64 is: 504.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.08 : 1,154.16 = 336.64 : x
  2. Step 2: Convert to fraction form
    770.08/1,154.16 = 336.64/x
  3. Step 3: Cross multiply
    770.08x = 1,154.16 × 336.64
  4. Step 4: Simplify right side
    770.08x = 388,536.42
  5. Step 5: Solve for x
    x = 388,536.42/770.08
  6. Step 6: Final answer
    x = 504.54

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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.