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Finding the Fourth Proportional to 770.41, 1,155.59 and 337.57

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Solution

The fourth proportional to 770.41, 1,155.59 and 337.57 is: 506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.41 : 1,155.59 = 337.57 : x
  2. Step 2: Convert to fraction form
    770.41/1,155.59 = 337.57/x
  3. Step 3: Cross multiply
    770.41x = 1,155.59 × 337.57
  4. Step 4: Simplify right side
    770.41x = 390,087.94
  5. Step 5: Solve for x
    x = 390,087.94/770.41
  6. Step 6: Final answer
    x = 506.34

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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.