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Finding the Fourth Proportional to 915.03, 1,371.74 and 337.50

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Solution

The fourth proportional to 915.03, 1,371.74 and 337.50 is: 505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    915.03 : 1,371.74 = 337.50 : x
  2. Step 2: Convert to fraction form
    915.03/1,371.74 = 337.50/x
  3. Step 3: Cross multiply
    915.03x = 1,371.74 × 337.50
  4. Step 4: Simplify right side
    915.03x = 462,960.56
  5. Step 5: Solve for x
    x = 462,960.56/915.03
  6. Step 6: Final answer
    x = 505.95

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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.